Home / 85,432.68-128,149.02-23,103.18

Finding the Fourth Proportional to 85,432.68, 128,149.02 and 23,103.18

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Solution

The fourth proportional to 85,432.68, 128,149.02 and 23,103.18 is: 34,654.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.68 : 128,149.02 = 23,103.18 : x
  2. Step 2: Convert to fraction form
    85,432.68/128,149.02 = 23,103.18/x
  3. Step 3: Cross multiply
    85,432.68x = 128,149.02 × 23,103.18
  4. Step 4: Simplify right side
    85,432.68x = 2,960,649,875.88
  5. Step 5: Solve for x
    x = 2,960,649,875.88/85,432.68
  6. Step 6: Final answer
    x = 34,654.77

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Similar ratio
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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.