Home / 74,188.71-102,378.20-42,351.39

Finding the Fourth Proportional to 74,188.71, 102,378.20 and 42,351.39

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Solution

The fourth proportional to 74,188.71, 102,378.20 and 42,351.39 is: 58,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,188.71 : 102,378.20 = 42,351.39 : x
  2. Step 2: Convert to fraction form
    74,188.71/102,378.20 = 42,351.39/x
  3. Step 3: Cross multiply
    74,188.71x = 102,378.20 × 42,351.39
  4. Step 4: Simplify right side
    74,188.71x = 4,335,858,863.94
  5. Step 5: Solve for x
    x = 4,335,858,863.94/74,188.71
  6. Step 6: Final answer
    x = 58,443.65

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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.