Home / 83,387.71-115,074.19-45,146.25

Finding the Fourth Proportional to 83,387.71, 115,074.19 and 45,146.25

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Solution

The fourth proportional to 83,387.71, 115,074.19 and 45,146.25 is: 62,301.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,387.71 : 115,074.19 = 45,146.25 : x
  2. Step 2: Convert to fraction form
    83,387.71/115,074.19 = 45,146.25/x
  3. Step 3: Cross multiply
    83,387.71x = 115,074.19 × 45,146.25
  4. Step 4: Simplify right side
    83,387.71x = 5,195,168,150.29
  5. Step 5: Solve for x
    x = 5,195,168,150.29/83,387.71
  6. Step 6: Final answer
    x = 62,301.36

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Half scale
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Double scale
Find fourth proportional to 83,388.71, 115,075.57 and 45,147.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.