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Finding the Fourth Proportional to 123,727.51, 185,588.95 and 39,487

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Solution

The fourth proportional to 123,727.51, 185,588.95 and 39,487 is: 59,229.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,727.51 : 185,588.95 = 39,487 : x
  2. Step 2: Convert to fraction form
    123,727.51/185,588.95 = 39,487/x
  3. Step 3: Cross multiply
    123,727.51x = 185,588.95 × 39,487
  4. Step 4: Simplify right side
    123,727.51x = 7,328,350,868.65
  5. Step 5: Solve for x
    x = 7,328,350,868.65/123,727.51
  6. Step 6: Final answer
    x = 59,229.76

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1.5x scale

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.