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Finding the Fourth Proportional to 91,140.66, 125,785.48 and 52,892

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Solution

The fourth proportional to 91,140.66, 125,785.48 and 52,892 is: 72,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140.66 : 125,785.48 = 52,892 : x
  2. Step 2: Convert to fraction form
    91,140.66/125,785.48 = 52,892/x
  3. Step 3: Cross multiply
    91,140.66x = 125,785.48 × 52,892
  4. Step 4: Simplify right side
    91,140.66x = 6,653,045,608.16
  5. Step 5: Solve for x
    x = 6,653,045,608.16/91,140.66
  6. Step 6: Final answer
    x = 72,997.56

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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.