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Finding the Fourth Proportional to 74,141.92, 102,315.92 and 40,150.44

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Solution

The fourth proportional to 74,141.92, 102,315.92 and 40,150.44 is: 55,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,141.92 : 102,315.92 = 40,150.44 : x
  2. Step 2: Convert to fraction form
    74,141.92/102,315.92 = 40,150.44/x
  3. Step 3: Cross multiply
    74,141.92x = 102,315.92 × 40,150.44
  4. Step 4: Simplify right side
    74,141.92x = 4,108,029,207.00
  5. Step 5: Solve for x
    x = 4,108,029,207.00/74,141.92
  6. Step 6: Final answer
    x = 55,407.65

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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.