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Finding the Fourth Proportional to 40,656, 60,921.02 and 28,200.24

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Solution

The fourth proportional to 40,656, 60,921.02 and 28,200.24 is: 42,256.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,656 : 60,921.02 = 28,200.24 : x
  2. Step 2: Convert to fraction form
    40,656/60,921.02 = 28,200.24/x
  3. Step 3: Cross multiply
    40,656x = 60,921.02 × 28,200.24
  4. Step 4: Simplify right side
    40,656x = 1,717,987,385.04
  5. Step 5: Solve for x
    x = 1,717,987,385.04/40,656
  6. Step 6: Final answer
    x = 42,256.68

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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.