Home / 74,013.38-102,140.89-40,479.38

Finding the Fourth Proportional to 74,013.38, 102,140.89 and 40,479.38

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Solution

The fourth proportional to 74,013.38, 102,140.89 and 40,479.38 is: 55,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,013.38 : 102,140.89 = 40,479.38 : x
  2. Step 2: Convert to fraction form
    74,013.38/102,140.89 = 40,479.38/x
  3. Step 3: Cross multiply
    74,013.38x = 102,140.89 × 40,479.38
  4. Step 4: Simplify right side
    74,013.38x = 4,134,599,899.85
  5. Step 5: Solve for x
    x = 4,134,599,899.85/74,013.38
  6. Step 6: Final answer
    x = 55,862.87

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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.