Home / 74,070.97-102,217.20-40,078.71

Finding the Fourth Proportional to 74,070.97, 102,217.20 and 40,078.71

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Solution

The fourth proportional to 74,070.97, 102,217.20 and 40,078.71 is: 55,308.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,070.97 : 102,217.20 = 40,078.71 : x
  2. Step 2: Convert to fraction form
    74,070.97/102,217.20 = 40,078.71/x
  3. Step 3: Cross multiply
    74,070.97x = 102,217.20 × 40,078.71
  4. Step 4: Simplify right side
    74,070.97x = 4,096,733,365.52
  5. Step 5: Solve for x
    x = 4,096,733,365.52/74,070.97
  6. Step 6: Final answer
    x = 55,308.22

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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.