Home / 74,126.28-102,295.10-40,135.52

Finding the Fourth Proportional to 74,126.28, 102,295.10 and 40,135.52

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Solution

The fourth proportional to 74,126.28, 102,295.10 and 40,135.52 is: 55,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,126.28 : 102,295.10 = 40,135.52 : x
  2. Step 2: Convert to fraction form
    74,126.28/102,295.10 = 40,135.52/x
  3. Step 3: Cross multiply
    74,126.28x = 102,295.10 × 40,135.52
  4. Step 4: Simplify right side
    74,126.28x = 4,105,666,319.80
  5. Step 5: Solve for x
    x = 4,105,666,319.80/74,126.28
  6. Step 6: Final answer
    x = 55,387.46

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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.