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Finding the Fourth Proportional to 97,879.17, 135,082.73 and 54,865.97

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Solution

The fourth proportional to 97,879.17, 135,082.73 and 54,865.97 is: 75,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,879.17 : 135,082.73 = 54,865.97 : x
  2. Step 2: Convert to fraction form
    97,879.17/135,082.73 = 54,865.97/x
  3. Step 3: Cross multiply
    97,879.17x = 135,082.73 × 54,865.97
  4. Step 4: Simplify right side
    97,879.17x = 7,411,444,061.95
  5. Step 5: Solve for x
    x = 7,411,444,061.95/97,879.17
  6. Step 6: Final answer
    x = 75,720.34

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1.5x scale

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.