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Finding the Fourth Proportional to 73,006.55, 109,510.70 and 28,654.19

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Solution

The fourth proportional to 73,006.55, 109,510.70 and 28,654.19 is: 42,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,006.55 : 109,510.70 = 28,654.19 : x
  2. Step 2: Convert to fraction form
    73,006.55/109,510.70 = 28,654.19/x
  3. Step 3: Cross multiply
    73,006.55x = 109,510.70 × 28,654.19
  4. Step 4: Simplify right side
    73,006.55x = 3,137,940,404.83
  5. Step 5: Solve for x
    x = 3,137,940,404.83/73,006.55
  6. Step 6: Final answer
    x = 42,981.63

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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.