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Finding the Fourth Proportional to 128,574.92, 192,875.06 and 44,324

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Solution

The fourth proportional to 128,574.92, 192,875.06 and 44,324 is: 66,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574.92 : 192,875.06 = 44,324 : x
  2. Step 2: Convert to fraction form
    128,574.92/192,875.06 = 44,324/x
  3. Step 3: Cross multiply
    128,574.92x = 192,875.06 × 44,324
  4. Step 4: Simplify right side
    128,574.92x = 8,548,994,159.44
  5. Step 5: Solve for x
    x = 8,548,994,159.44/128,574.92
  6. Step 6: Final answer
    x = 66,490.37

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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.