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Finding the Fourth Proportional to 90,700.31, 125,160.89 and 50,412.71

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Solution

The fourth proportional to 90,700.31, 125,160.89 and 50,412.71 is: 69,566.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,700.31 : 125,160.89 = 50,412.71 : x
  2. Step 2: Convert to fraction form
    90,700.31/125,160.89 = 50,412.71/x
  3. Step 3: Cross multiply
    90,700.31x = 125,160.89 × 50,412.71
  4. Step 4: Simplify right side
    90,700.31x = 6,309,698,773.04
  5. Step 5: Solve for x
    x = 6,309,698,773.04/90,700.31
  6. Step 6: Final answer
    x = 69,566.46

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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.