Home / 85,591.28-128,397.88-26,432.96

Finding the Fourth Proportional to 85,591.28, 128,397.88 and 26,432.96

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Solution

The fourth proportional to 85,591.28, 128,397.88 and 26,432.96 is: 39,652.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.28 : 128,397.88 = 26,432.96 : x
  2. Step 2: Convert to fraction form
    85,591.28/128,397.88 = 26,432.96/x
  3. Step 3: Cross multiply
    85,591.28x = 128,397.88 × 26,432.96
  4. Step 4: Simplify right side
    85,591.28x = 3,393,936,026.12
  5. Step 5: Solve for x
    x = 3,393,936,026.12/85,591.28
  6. Step 6: Final answer
    x = 39,652.82

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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.