Home / 82,431.20-123,549.60-61,630.40

Finding the Fourth Proportional to 82,431.20, 123,549.60 and 61,630.40

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Solution

The fourth proportional to 82,431.20, 123,549.60 and 61,630.40 is: 92,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,431.20 : 123,549.60 = 61,630.40 : x
  2. Step 2: Convert to fraction form
    82,431.20/123,549.60 = 61,630.40/x
  3. Step 3: Cross multiply
    82,431.20x = 123,549.60 × 61,630.40
  4. Step 4: Simplify right side
    82,431.20x = 7,614,411,267.84
  5. Step 5: Solve for x
    x = 7,614,411,267.84/82,431.20
  6. Step 6: Final answer
    x = 92,372.93

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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.