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Finding the Fourth Proportional to 89,989.98, 124,187.12 and 49,704.76

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Solution

The fourth proportional to 89,989.98, 124,187.12 and 49,704.76 is: 68,593.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,989.98 : 124,187.12 = 49,704.76 : x
  2. Step 2: Convert to fraction form
    89,989.98/124,187.12 = 49,704.76/x
  3. Step 3: Cross multiply
    89,989.98x = 124,187.12 × 49,704.76
  4. Step 4: Simplify right side
    89,989.98x = 6,172,690,994.69
  5. Step 5: Solve for x
    x = 6,172,690,994.69/89,989.98
  6. Step 6: Final answer
    x = 68,593.09

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Double scale
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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.