Home / 80,718.31-111,381.24-44,905.78

Finding the Fourth Proportional to 80,718.31, 111,381.24 and 44,905.78

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Solution

The fourth proportional to 80,718.31, 111,381.24 and 44,905.78 is: 61,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,718.31 : 111,381.24 = 44,905.78 : x
  2. Step 2: Convert to fraction form
    80,718.31/111,381.24 = 44,905.78/x
  3. Step 3: Cross multiply
    80,718.31x = 111,381.24 × 44,905.78
  4. Step 4: Simplify right side
    80,718.31x = 5,001,661,459.57
  5. Step 5: Solve for x
    x = 5,001,661,459.57/80,718.31
  6. Step 6: Final answer
    x = 61,964.40

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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.