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Finding the Fourth Proportional to 80,970.97, 111,740.12 and 45,163.28

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Solution

The fourth proportional to 80,970.97, 111,740.12 and 45,163.28 is: 62,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,970.97 : 111,740.12 = 45,163.28 : x
  2. Step 2: Convert to fraction form
    80,970.97/111,740.12 = 45,163.28/x
  3. Step 3: Cross multiply
    80,970.97x = 111,740.12 × 45,163.28
  4. Step 4: Simplify right side
    80,970.97x = 5,046,550,326.79
  5. Step 5: Solve for x
    x = 5,046,550,326.79/80,970.97
  6. Step 6: Final answer
    x = 62,325.43

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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.