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Finding the Fourth Proportional to 73,239.20, 101,070.06 and 39,705.20

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Solution

The fourth proportional to 73,239.20, 101,070.06 and 39,705.20 is: 54,793.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,239.20 : 101,070.06 = 39,705.20 : x
  2. Step 2: Convert to fraction form
    73,239.20/101,070.06 = 39,705.20/x
  3. Step 3: Cross multiply
    73,239.20x = 101,070.06 × 39,705.20
  4. Step 4: Simplify right side
    73,239.20x = 4,013,006,946.31
  5. Step 5: Solve for x
    x = 4,013,006,946.31/73,239.20
  6. Step 6: Final answer
    x = 54,793.16

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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.