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Finding the Fourth Proportional to 83,716.87, 125,572.06 and 28,312.87

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Solution

The fourth proportional to 83,716.87, 125,572.06 and 28,312.87 is: 42,468.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,716.87 : 125,572.06 = 28,312.87 : x
  2. Step 2: Convert to fraction form
    83,716.87/125,572.06 = 28,312.87/x
  3. Step 3: Cross multiply
    83,716.87x = 125,572.06 × 28,312.87
  4. Step 4: Simplify right side
    83,716.87x = 3,555,305,410.41
  5. Step 5: Solve for x
    x = 3,555,305,410.41/83,716.87
  6. Step 6: Final answer
    x = 42,468.21

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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.