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Finding the Fourth Proportional to 40,010.65, 60,016.03 and 10,428.46

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Solution

The fourth proportional to 40,010.65, 60,016.03 and 10,428.46 is: 15,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,010.65 : 60,016.03 = 10,428.46 : x
  2. Step 2: Convert to fraction form
    40,010.65/60,016.03 = 10,428.46/x
  3. Step 3: Cross multiply
    40,010.65x = 60,016.03 × 10,428.46
  4. Step 4: Simplify right side
    40,010.65x = 625,874,866.11
  5. Step 5: Solve for x
    x = 625,874,866.11/40,010.65
  6. Step 6: Final answer
    x = 15,642.71

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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.