Home / 72,257.20-99,671.28-47,728.16

Finding the Fourth Proportional to 72,257.20, 99,671.28 and 47,728.16

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Solution

The fourth proportional to 72,257.20, 99,671.28 and 47,728.16 is: 65,836.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.20 : 99,671.28 = 47,728.16 : x
  2. Step 2: Convert to fraction form
    72,257.20/99,671.28 = 47,728.16/x
  3. Step 3: Cross multiply
    72,257.20x = 99,671.28 × 47,728.16
  4. Step 4: Simplify right side
    72,257.20x = 4,757,126,799.24
  5. Step 5: Solve for x
    x = 4,757,126,799.24/72,257.20
  6. Step 6: Final answer
    x = 65,836.02

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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.