Home / 89,616.31-123,670.50-48,780.60

Finding the Fourth Proportional to 89,616.31, 123,670.50 and 48,780.60

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Solution

The fourth proportional to 89,616.31, 123,670.50 and 48,780.60 is: 67,317.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,616.31 : 123,670.50 = 48,780.60 : x
  2. Step 2: Convert to fraction form
    89,616.31/123,670.50 = 48,780.60/x
  3. Step 3: Cross multiply
    89,616.31x = 123,670.50 × 48,780.60
  4. Step 4: Simplify right side
    89,616.31x = 6,032,721,305.02
  5. Step 5: Solve for x
    x = 6,032,721,305.02/89,616.31
  6. Step 6: Final answer
    x = 67,317.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.