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Finding the Fourth Proportional to 80,434.60, 120,110.24 and 65,672.32

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Solution

The fourth proportional to 80,434.60, 120,110.24 and 65,672.32 is: 98,066.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,434.60 : 120,110.24 = 65,672.32 : x
  2. Step 2: Convert to fraction form
    80,434.60/120,110.24 = 65,672.32/x
  3. Step 3: Cross multiply
    80,434.60x = 120,110.24 × 65,672.32
  4. Step 4: Simplify right side
    80,434.60x = 7,887,918,116.56
  5. Step 5: Solve for x
    x = 7,887,918,116.56/80,434.60
  6. Step 6: Final answer
    x = 98,066.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.