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Finding the Fourth Proportional to 80,077.16, 120,129.70 and 35,702.94

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Solution

The fourth proportional to 80,077.16, 120,129.70 and 35,702.94 is: 53,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,077.16 : 120,129.70 = 35,702.94 : x
  2. Step 2: Convert to fraction form
    80,077.16/120,129.70 = 35,702.94/x
  3. Step 3: Cross multiply
    80,077.16x = 120,129.70 × 35,702.94
  4. Step 4: Simplify right side
    80,077.16x = 4,288,983,471.32
  5. Step 5: Solve for x
    x = 4,288,983,471.32/80,077.16
  6. Step 6: Final answer
    x = 53,560.63

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1.5x scale

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.