Home / 89,383.20-133,856.10-42,581.40

Finding the Fourth Proportional to 89,383.20, 133,856.10 and 42,581.40

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Solution

The fourth proportional to 89,383.20, 133,856.10 and 42,581.40 is: 63,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,383.20 : 133,856.10 = 42,581.40 : x
  2. Step 2: Convert to fraction form
    89,383.20/133,856.10 = 42,581.40/x
  3. Step 3: Cross multiply
    89,383.20x = 133,856.10 × 42,581.40
  4. Step 4: Simplify right side
    89,383.20x = 5,699,780,136.54
  5. Step 5: Solve for x
    x = 5,699,780,136.54/89,383.20
  6. Step 6: Final answer
    x = 63,767.91

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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.