Home / 87,501.28-131,264.80-28,317.28

Finding the Fourth Proportional to 87,501.28, 131,264.80 and 28,317.28

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Solution

The fourth proportional to 87,501.28, 131,264.80 and 28,317.28 is: 42,480.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,501.28 : 131,264.80 = 28,317.28 : x
  2. Step 2: Convert to fraction form
    87,501.28/131,264.80 = 28,317.28/x
  3. Step 3: Cross multiply
    87,501.28x = 131,264.80 × 28,317.28
  4. Step 4: Simplify right side
    87,501.28x = 3,717,062,095.74
  5. Step 5: Solve for x
    x = 3,717,062,095.74/87,501.28
  6. Step 6: Final answer
    x = 42,480.09

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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.