Home / 89,419.20-133,910.10-42,617.40

Finding the Fourth Proportional to 89,419.20, 133,910.10 and 42,617.40

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Solution

The fourth proportional to 89,419.20, 133,910.10 and 42,617.40 is: 63,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,419.20 : 133,910.10 = 42,617.40 : x
  2. Step 2: Convert to fraction form
    89,419.20/133,910.10 = 42,617.40/x
  3. Step 3: Cross multiply
    89,419.20x = 133,910.10 × 42,617.40
  4. Step 4: Simplify right side
    89,419.20x = 5,706,900,295.74
  5. Step 5: Solve for x
    x = 5,706,900,295.74/89,419.20
  6. Step 6: Final answer
    x = 63,821.87

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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.