Home / 74,178.27-102,366.11-43,978.38

Finding the Fourth Proportional to 74,178.27, 102,366.11 and 43,978.38

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Solution

The fourth proportional to 74,178.27, 102,366.11 and 43,978.38 is: 60,690.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,178.27 : 102,366.11 = 43,978.38 : x
  2. Step 2: Convert to fraction form
    74,178.27/102,366.11 = 43,978.38/x
  3. Step 3: Cross multiply
    74,178.27x = 102,366.11 × 43,978.38
  4. Step 4: Simplify right side
    74,178.27x = 4,501,895,684.70
  5. Step 5: Solve for x
    x = 4,501,895,684.70/74,178.27
  6. Step 6: Final answer
    x = 60,690.22

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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.