Home / 72,972.10-109,458.15-26,229.70

Finding the Fourth Proportional to 72,972.10, 109,458.15 and 26,229.70

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Solution

The fourth proportional to 72,972.10, 109,458.15 and 26,229.70 is: 39,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,972.10 : 109,458.15 = 26,229.70 : x
  2. Step 2: Convert to fraction form
    72,972.10/109,458.15 = 26,229.70/x
  3. Step 3: Cross multiply
    72,972.10x = 109,458.15 × 26,229.70
  4. Step 4: Simplify right side
    72,972.10x = 2,871,054,437.06
  5. Step 5: Solve for x
    x = 2,871,054,437.06/72,972.10
  6. Step 6: Final answer
    x = 39,344.55

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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.