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Finding the Fourth Proportional to 74,005.92, 102,127.92 and 40,474.08

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Solution

The fourth proportional to 74,005.92, 102,127.92 and 40,474.08 is: 55,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,005.92 : 102,127.92 = 40,474.08 : x
  2. Step 2: Convert to fraction form
    74,005.92/102,127.92 = 40,474.08/x
  3. Step 3: Cross multiply
    74,005.92x = 102,127.92 × 40,474.08
  4. Step 4: Simplify right side
    74,005.92x = 4,133,533,604.31
  5. Step 5: Solve for x
    x = 4,133,533,604.31/74,005.92
  6. Step 6: Final answer
    x = 55,854.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.