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Finding the Fourth Proportional to 80,058.60, 119,971.26 and 45,008.28

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Solution

The fourth proportional to 80,058.60, 119,971.26 and 45,008.28 is: 67,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,058.60 : 119,971.26 = 45,008.28 : x
  2. Step 2: Convert to fraction form
    80,058.60/119,971.26 = 45,008.28/x
  3. Step 3: Cross multiply
    80,058.60x = 119,971.26 × 45,008.28
  4. Step 4: Simplify right side
    80,058.60x = 5,399,700,062.03
  5. Step 5: Solve for x
    x = 5,399,700,062.03/80,058.60
  6. Step 6: Final answer
    x = 67,446.85

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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.