Home / 74,006.65-102,129.17-40,015.12

Finding the Fourth Proportional to 74,006.65, 102,129.17 and 40,015.12

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Solution

The fourth proportional to 74,006.65, 102,129.17 and 40,015.12 is: 55,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,006.65 : 102,129.17 = 40,015.12 : x
  2. Step 2: Convert to fraction form
    74,006.65/102,129.17 = 40,015.12/x
  3. Step 3: Cross multiply
    74,006.65x = 102,129.17 × 40,015.12
  4. Step 4: Simplify right side
    74,006.65x = 4,086,711,072.65
  5. Step 5: Solve for x
    x = 4,086,711,072.65/74,006.65
  6. Step 6: Final answer
    x = 55,220.87

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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.