Home / 74,022-102,151.80-40,488.72

Finding the Fourth Proportional to 74,022, 102,151.80 and 40,488.72

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Solution

The fourth proportional to 74,022, 102,151.80 and 40,488.72 is: 55,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,022 : 102,151.80 = 40,488.72 : x
  2. Step 2: Convert to fraction form
    74,022/102,151.80 = 40,488.72/x
  3. Step 3: Cross multiply
    74,022x = 102,151.80 × 40,488.72
  4. Step 4: Simplify right side
    74,022x = 4,135,995,627.70
  5. Step 5: Solve for x
    x = 4,135,995,627.70/74,022
  6. Step 6: Final answer
    x = 55,875.22

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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.