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Finding the Fourth Proportional to 71,614.94, 98,737.76 and 51,221.56

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Solution

The fourth proportional to 71,614.94, 98,737.76 and 51,221.56 is: 70,620.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,614.94 : 98,737.76 = 51,221.56 : x
  2. Step 2: Convert to fraction form
    71,614.94/98,737.76 = 51,221.56/x
  3. Step 3: Cross multiply
    71,614.94x = 98,737.76 × 51,221.56
  4. Step 4: Simplify right side
    71,614.94x = 5,057,502,098.11
  5. Step 5: Solve for x
    x = 5,057,502,098.11/71,614.94
  6. Step 6: Final answer
    x = 70,620.77

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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.