Home / 75,718.32-113,577.90-31,321.02

Finding the Fourth Proportional to 75,718.32, 113,577.90 and 31,321.02

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Solution

The fourth proportional to 75,718.32, 113,577.90 and 31,321.02 is: 46,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,718.32 : 113,577.90 = 31,321.02 : x
  2. Step 2: Convert to fraction form
    75,718.32/113,577.90 = 31,321.02/x
  3. Step 3: Cross multiply
    75,718.32x = 113,577.90 × 31,321.02
  4. Step 4: Simplify right side
    75,718.32x = 3,557,375,677.46
  5. Step 5: Solve for x
    x = 3,557,375,677.46/75,718.32
  6. Step 6: Final answer
    x = 46,981.70

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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.