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Finding the Fourth Proportional to 72,301.32, 108,522 and 34,887.70

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Solution

The fourth proportional to 72,301.32, 108,522 and 34,887.70 is: 52,365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.32 : 108,522 = 34,887.70 : x
  2. Step 2: Convert to fraction form
    72,301.32/108,522 = 34,887.70/x
  3. Step 3: Cross multiply
    72,301.32x = 108,522 × 34,887.70
  4. Step 4: Simplify right side
    72,301.32x = 3,786,082,979.40
  5. Step 5: Solve for x
    x = 3,786,082,979.40/72,301.32
  6. Step 6: Final answer
    x = 52,365.34

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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.