Home / 74,972.12-112,402.61-45,382.95

Finding the Fourth Proportional to 74,972.12, 112,402.61 and 45,382.95

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Solution

The fourth proportional to 74,972.12, 112,402.61 and 45,382.95 is: 68,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,972.12 : 112,402.61 = 45,382.95 : x
  2. Step 2: Convert to fraction form
    74,972.12/112,402.61 = 45,382.95/x
  3. Step 3: Cross multiply
    74,972.12x = 112,402.61 × 45,382.95
  4. Step 4: Simplify right side
    74,972.12x = 5,101,161,802.58
  5. Step 5: Solve for x
    x = 5,101,161,802.58/74,972.12
  6. Step 6: Final answer
    x = 68,040.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.