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Finding the Fourth Proportional to 73,192.20, 101,005.50 and 39,658.20

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Solution

The fourth proportional to 73,192.20, 101,005.50 and 39,658.20 is: 54,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,192.20 : 101,005.50 = 39,658.20 : x
  2. Step 2: Convert to fraction form
    73,192.20/101,005.50 = 39,658.20/x
  3. Step 3: Cross multiply
    73,192.20x = 101,005.50 × 39,658.20
  4. Step 4: Simplify right side
    73,192.20x = 4,005,696,320.10
  5. Step 5: Solve for x
    x = 4,005,696,320.10/73,192.20
  6. Step 6: Final answer
    x = 54,728.46

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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.