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Finding the Fourth Proportional to 61,606.85, 85,002.66 and 37,407.20

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Solution

The fourth proportional to 61,606.85, 85,002.66 and 37,407.20 is: 51,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,606.85 : 85,002.66 = 37,407.20 : x
  2. Step 2: Convert to fraction form
    61,606.85/85,002.66 = 37,407.20/x
  3. Step 3: Cross multiply
    61,606.85x = 85,002.66 × 37,407.20
  4. Step 4: Simplify right side
    61,606.85x = 3,179,711,078.14
  5. Step 5: Solve for x
    x = 3,179,711,078.14/61,606.85
  6. Step 6: Final answer
    x = 51,612.95

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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.