Home / 74,122.65-102,289.30-40,131.15

Finding the Fourth Proportional to 74,122.65, 102,289.30 and 40,131.15

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Solution

The fourth proportional to 74,122.65, 102,289.30 and 40,131.15 is: 55,381.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122.65 : 102,289.30 = 40,131.15 : x
  2. Step 2: Convert to fraction form
    74,122.65/102,289.30 = 40,131.15/x
  3. Step 3: Cross multiply
    74,122.65x = 102,289.30 × 40,131.15
  4. Step 4: Simplify right side
    74,122.65x = 4,104,986,757.78
  5. Step 5: Solve for x
    x = 4,104,986,757.78/74,122.65
  6. Step 6: Final answer
    x = 55,381.00

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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.