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Finding the Fourth Proportional to 128,468.52, 192,707.01 and 44,227.81

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Solution

The fourth proportional to 128,468.52, 192,707.01 and 44,227.81 is: 66,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,468.52 : 192,707.01 = 44,227.81 : x
  2. Step 2: Convert to fraction form
    128,468.52/192,707.01 = 44,227.81/x
  3. Step 3: Cross multiply
    128,468.52x = 192,707.01 × 44,227.81
  4. Step 4: Simplify right side
    128,468.52x = 8,523,009,023.95
  5. Step 5: Solve for x
    x = 8,523,009,023.95/128,468.52
  6. Step 6: Final answer
    x = 66,343.17

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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.