Home / 87,643.38-131,472.36-28,477.74

Finding the Fourth Proportional to 87,643.38, 131,472.36 and 28,477.74

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Solution

The fourth proportional to 87,643.38, 131,472.36 and 28,477.74 is: 42,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,643.38 : 131,472.36 = 28,477.74 : x
  2. Step 2: Convert to fraction form
    87,643.38/131,472.36 = 28,477.74/x
  3. Step 3: Cross multiply
    87,643.38x = 131,472.36 × 28,477.74
  4. Step 4: Simplify right side
    87,643.38x = 3,744,035,685.27
  5. Step 5: Solve for x
    x = 3,744,035,685.27/87,643.38
  6. Step 6: Final answer
    x = 42,718.98

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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.