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Finding the Fourth Proportional to 61,913.43, 85,472.01 and 39,275.55

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Solution

The fourth proportional to 61,913.43, 85,472.01 and 39,275.55 is: 54,220.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,913.43 : 85,472.01 = 39,275.55 : x
  2. Step 2: Convert to fraction form
    61,913.43/85,472.01 = 39,275.55/x
  3. Step 3: Cross multiply
    61,913.43x = 85,472.01 × 39,275.55
  4. Step 4: Simplify right side
    61,913.43x = 3,356,960,202.36
  5. Step 5: Solve for x
    x = 3,356,960,202.36/61,913.43
  6. Step 6: Final answer
    x = 54,220.23

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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.