Home / 80,543.12-111,131.60-48,711.36

Finding the Fourth Proportional to 80,543.12, 111,131.60 and 48,711.36

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Solution

The fourth proportional to 80,543.12, 111,131.60 and 48,711.36 is: 67,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,543.12 : 111,131.60 = 48,711.36 : x
  2. Step 2: Convert to fraction form
    80,543.12/111,131.60 = 48,711.36/x
  3. Step 3: Cross multiply
    80,543.12x = 111,131.60 × 48,711.36
  4. Step 4: Simplify right side
    80,543.12x = 5,413,371,374.98
  5. Step 5: Solve for x
    x = 5,413,371,374.98/80,543.12
  6. Step 6: Final answer
    x = 67,210.85

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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.