Home / 87,742.32-131,585.12-28,563.76

Finding the Fourth Proportional to 87,742.32, 131,585.12 and 28,563.76

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Solution

The fourth proportional to 87,742.32, 131,585.12 and 28,563.76 is: 42,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,742.32 : 131,585.12 = 28,563.76 : x
  2. Step 2: Convert to fraction form
    87,742.32/131,585.12 = 28,563.76/x
  3. Step 3: Cross multiply
    87,742.32x = 131,585.12 × 28,563.76
  4. Step 4: Simplify right side
    87,742.32x = 3,758,565,787.25
  5. Step 5: Solve for x
    x = 3,758,565,787.25/87,742.32
  6. Step 6: Final answer
    x = 42,836.41

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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.