Home / 74,340.30-102,589.66-40,348.78

Finding the Fourth Proportional to 74,340.30, 102,589.66 and 40,348.78

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Solution

The fourth proportional to 74,340.30, 102,589.66 and 40,348.78 is: 55,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,340.30 : 102,589.66 = 40,348.78 : x
  2. Step 2: Convert to fraction form
    74,340.30/102,589.66 = 40,348.78/x
  3. Step 3: Cross multiply
    74,340.30x = 102,589.66 × 40,348.78
  4. Step 4: Simplify right side
    74,340.30x = 4,139,367,621.61
  5. Step 5: Solve for x
    x = 4,139,367,621.61/74,340.30
  6. Step 6: Final answer
    x = 55,681.34

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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.