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Finding the Fourth Proportional to 89,350.40, 133,910.40 and 42,502.40

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Solution

The fourth proportional to 89,350.40, 133,910.40 and 42,502.40 is: 63,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,350.40 : 133,910.40 = 42,502.40 : x
  2. Step 2: Convert to fraction form
    89,350.40/133,910.40 = 42,502.40/x
  3. Step 3: Cross multiply
    89,350.40x = 133,910.40 × 42,502.40
  4. Step 4: Simplify right side
    89,350.40x = 5,691,513,384.96
  5. Step 5: Solve for x
    x = 5,691,513,384.96/89,350.40
  6. Step 6: Final answer
    x = 63,698.80

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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.