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Finding the Fourth Proportional to 145,812.78, 218,719.26 and 40,634.52

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Solution

The fourth proportional to 145,812.78, 218,719.26 and 40,634.52 is: 60,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,812.78 : 218,719.26 = 40,634.52 : x
  2. Step 2: Convert to fraction form
    145,812.78/218,719.26 = 40,634.52/x
  3. Step 3: Cross multiply
    145,812.78x = 218,719.26 × 40,634.52
  4. Step 4: Simplify right side
    145,812.78x = 8,887,552,144.86
  5. Step 5: Solve for x
    x = 8,887,552,144.86/145,812.78
  6. Step 6: Final answer
    x = 60,951.81

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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.