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Finding the Fourth Proportional to 80,515.80, 120,807.86 and 43,066.13

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Solution

The fourth proportional to 80,515.80, 120,807.86 and 43,066.13 is: 64,617.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,515.80 : 120,807.86 = 43,066.13 : x
  2. Step 2: Convert to fraction form
    80,515.80/120,807.86 = 43,066.13/x
  3. Step 3: Cross multiply
    80,515.80x = 120,807.86 × 43,066.13
  4. Step 4: Simplify right side
    80,515.80x = 5,202,726,184.41
  5. Step 5: Solve for x
    x = 5,202,726,184.41/80,515.80
  6. Step 6: Final answer
    x = 64,617.46

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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.