Home / 81,290.26-112,184.91-45,478.13

Finding the Fourth Proportional to 81,290.26, 112,184.91 and 45,478.13

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Solution

The fourth proportional to 81,290.26, 112,184.91 and 45,478.13 is: 62,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,290.26 : 112,184.91 = 45,478.13 : x
  2. Step 2: Convert to fraction form
    81,290.26/112,184.91 = 45,478.13/x
  3. Step 3: Cross multiply
    81,290.26x = 112,184.91 × 45,478.13
  4. Step 4: Simplify right side
    81,290.26x = 5,101,959,921.02
  5. Step 5: Solve for x
    x = 5,101,959,921.02/81,290.26
  6. Step 6: Final answer
    x = 62,762.25

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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.