Home / 87,507.12-131,276.88-28,336.80

Finding the Fourth Proportional to 87,507.12, 131,276.88 and 28,336.80

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Solution

The fourth proportional to 87,507.12, 131,276.88 and 28,336.80 is: 42,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,507.12 : 131,276.88 = 28,336.80 : x
  2. Step 2: Convert to fraction form
    87,507.12/131,276.88 = 28,336.80/x
  3. Step 3: Cross multiply
    87,507.12x = 131,276.88 × 28,336.80
  4. Step 4: Simplify right side
    87,507.12x = 3,719,966,693.18
  5. Step 5: Solve for x
    x = 3,719,966,693.18/87,507.12
  6. Step 6: Final answer
    x = 42,510.45

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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.