Home / 74,178.28-102,365.89-40,187.62

Finding the Fourth Proportional to 74,178.28, 102,365.89 and 40,187.62

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Solution

The fourth proportional to 74,178.28, 102,365.89 and 40,187.62 is: 55,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,178.28 : 102,365.89 = 40,187.62 : x
  2. Step 2: Convert to fraction form
    74,178.28/102,365.89 = 40,187.62/x
  3. Step 3: Cross multiply
    74,178.28x = 102,365.89 × 40,187.62
  4. Step 4: Simplify right side
    74,178.28x = 4,113,841,488.28
  5. Step 5: Solve for x
    x = 4,113,841,488.28/74,178.28
  6. Step 6: Final answer
    x = 55,458.85

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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.