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Finding the Fourth Proportional to 52,259.68, 72,119.70 and 28,387.72

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Solution

The fourth proportional to 52,259.68, 72,119.70 and 28,387.72 is: 39,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,259.68 : 72,119.70 = 28,387.72 : x
  2. Step 2: Convert to fraction form
    52,259.68/72,119.70 = 28,387.72/x
  3. Step 3: Cross multiply
    52,259.68x = 72,119.70 × 28,387.72
  4. Step 4: Simplify right side
    52,259.68x = 2,047,313,850.08
  5. Step 5: Solve for x
    x = 2,047,313,850.08/52,259.68
  6. Step 6: Final answer
    x = 39,175.78

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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.