Home / 89,423.13-123,403.52-49,136.78

Finding the Fourth Proportional to 89,423.13, 123,403.52 and 49,136.78

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Solution

The fourth proportional to 89,423.13, 123,403.52 and 49,136.78 is: 67,808.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,423.13 : 123,403.52 = 49,136.78 : x
  2. Step 2: Convert to fraction form
    89,423.13/123,403.52 = 49,136.78/x
  3. Step 3: Cross multiply
    89,423.13x = 123,403.52 × 49,136.78
  4. Step 4: Simplify right side
    89,423.13x = 6,063,650,750.76
  5. Step 5: Solve for x
    x = 6,063,650,750.76/89,423.13
  6. Step 6: Final answer
    x = 67,808.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.