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Finding the Fourth Proportional to 73,008.46, 109,512.69 and 28,656.10

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Solution

The fourth proportional to 73,008.46, 109,512.69 and 28,656.10 is: 42,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,008.46 : 109,512.69 = 28,656.10 : x
  2. Step 2: Convert to fraction form
    73,008.46/109,512.69 = 28,656.10/x
  3. Step 3: Cross multiply
    73,008.46x = 109,512.69 × 28,656.10
  4. Step 4: Simplify right side
    73,008.46x = 3,138,206,595.91
  5. Step 5: Solve for x
    x = 3,138,206,595.91/73,008.46
  6. Step 6: Final answer
    x = 42,984.15

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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.