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Finding the Fourth Proportional to 145,732.78, 218,607.01 and 45,900.79

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Solution

The fourth proportional to 145,732.78, 218,607.01 and 45,900.79 is: 68,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,732.78 : 218,607.01 = 45,900.79 : x
  2. Step 2: Convert to fraction form
    145,732.78/218,607.01 = 45,900.79/x
  3. Step 3: Cross multiply
    145,732.78x = 218,607.01 × 45,900.79
  4. Step 4: Simplify right side
    145,732.78x = 10,034,234,458.54
  5. Step 5: Solve for x
    x = 10,034,234,458.54/145,732.78
  6. Step 6: Final answer
    x = 68,853.65

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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.