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Finding the Fourth Proportional to 71,754.53, 99,021.69 and 39,925.44

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Solution

The fourth proportional to 71,754.53, 99,021.69 and 39,925.44 is: 55,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,754.53 : 99,021.69 = 39,925.44 : x
  2. Step 2: Convert to fraction form
    71,754.53/99,021.69 = 39,925.44/x
  3. Step 3: Cross multiply
    71,754.53x = 99,021.69 × 39,925.44
  4. Step 4: Simplify right side
    71,754.53x = 3,953,484,542.79
  5. Step 5: Solve for x
    x = 3,953,484,542.79/71,754.53
  6. Step 6: Final answer
    x = 55,097.36

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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.