Home / 72,746.17-109,120.97-20,156.11

Finding the Fourth Proportional to 72,746.17, 109,120.97 and 20,156.11

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Solution

The fourth proportional to 72,746.17, 109,120.97 and 20,156.11 is: 30,234.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,746.17 : 109,120.97 = 20,156.11 : x
  2. Step 2: Convert to fraction form
    72,746.17/109,120.97 = 20,156.11/x
  3. Step 3: Cross multiply
    72,746.17x = 109,120.97 × 20,156.11
  4. Step 4: Simplify right side
    72,746.17x = 2,199,454,052.21
  5. Step 5: Solve for x
    x = 2,199,454,052.21/72,746.17
  6. Step 6: Final answer
    x = 30,234.64

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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.