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Finding the Fourth Proportional to 39,143.20, 52,882.20 and 39,143.20

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Solution

The fourth proportional to 39,143.20, 52,882.20 and 39,143.20 is: 52,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.20 : 52,882.20 = 39,143.20 : x
  2. Step 2: Convert to fraction form
    39,143.20/52,882.20 = 39,143.20/x
  3. Step 3: Cross multiply
    39,143.20x = 52,882.20 × 39,143.20
  4. Step 4: Simplify right side
    39,143.20x = 2,069,978,531.04
  5. Step 5: Solve for x
    x = 2,069,978,531.04/39,143.20
  6. Step 6: Final answer
    x = 52,882.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.