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Finding the Fourth Proportional to 145,727.76, 218,600.40 and 45,891.20

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Solution

The fourth proportional to 145,727.76, 218,600.40 and 45,891.20 is: 68,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,727.76 : 218,600.40 = 45,891.20 : x
  2. Step 2: Convert to fraction form
    145,727.76/218,600.40 = 45,891.20/x
  3. Step 3: Cross multiply
    145,727.76x = 218,600.40 × 45,891.20
  4. Step 4: Simplify right side
    145,727.76x = 10,031,834,676.48
  5. Step 5: Solve for x
    x = 10,031,834,676.48/145,727.76
  6. Step 6: Final answer
    x = 68,839.56

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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.