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Finding the Fourth Proportional to 71,060.93, 106,572.83 and 21,127.58

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Solution

The fourth proportional to 71,060.93, 106,572.83 and 21,127.58 is: 31,685.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,060.93 : 106,572.83 = 21,127.58 : x
  2. Step 2: Convert to fraction form
    71,060.93/106,572.83 = 21,127.58/x
  3. Step 3: Cross multiply
    71,060.93x = 106,572.83 × 21,127.58
  4. Step 4: Simplify right side
    71,060.93x = 2,251,625,353.15
  5. Step 5: Solve for x
    x = 2,251,625,353.15/71,060.93
  6. Step 6: Final answer
    x = 31,685.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.