Home / 89,439.12-133,937.24-65,690.35

Finding the Fourth Proportional to 89,439.12, 133,937.24 and 65,690.35

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Solution

The fourth proportional to 89,439.12, 133,937.24 and 65,690.35 is: 98,372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,439.12 : 133,937.24 = 65,690.35 : x
  2. Step 2: Convert to fraction form
    89,439.12/133,937.24 = 65,690.35/x
  3. Step 3: Cross multiply
    89,439.12x = 133,937.24 × 65,690.35
  4. Step 4: Simplify right side
    89,439.12x = 8,798,384,505.28
  5. Step 5: Solve for x
    x = 8,798,384,505.28/89,439.12
  6. Step 6: Final answer
    x = 98,372.89

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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.