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Finding the Fourth Proportional to 61,908.45, 85,470.12 and 37,718.54

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Solution

The fourth proportional to 61,908.45, 85,470.12 and 37,718.54 is: 52,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,908.45 : 85,470.12 = 37,718.54 : x
  2. Step 2: Convert to fraction form
    61,908.45/85,470.12 = 37,718.54/x
  3. Step 3: Cross multiply
    61,908.45x = 85,470.12 × 37,718.54
  4. Step 4: Simplify right side
    61,908.45x = 3,223,808,140.02
  5. Step 5: Solve for x
    x = 3,223,808,140.02/61,908.45
  6. Step 6: Final answer
    x = 52,073.80

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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.