Home / 43,278.12-59,686.26-28,165.16

Finding the Fourth Proportional to 43,278.12, 59,686.26 and 28,165.16

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Solution

The fourth proportional to 43,278.12, 59,686.26 and 28,165.16 is: 38,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.12 : 59,686.26 = 28,165.16 : x
  2. Step 2: Convert to fraction form
    43,278.12/59,686.26 = 28,165.16/x
  3. Step 3: Cross multiply
    43,278.12x = 59,686.26 × 28,165.16
  4. Step 4: Simplify right side
    43,278.12x = 1,681,073,062.70
  5. Step 5: Solve for x
    x = 1,681,073,062.70/43,278.12
  6. Step 6: Final answer
    x = 38,843.49

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Double scale
Find fourth proportional to 43,279.12, 59,687.64 and 28,166.16
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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.