Home / 75,729.12-113,625-31,364.88

Finding the Fourth Proportional to 75,729.12, 113,625 and 31,364.88

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Solution

The fourth proportional to 75,729.12, 113,625 and 31,364.88 is: 47,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,729.12 : 113,625 = 31,364.88 : x
  2. Step 2: Convert to fraction form
    75,729.12/113,625 = 31,364.88/x
  3. Step 3: Cross multiply
    75,729.12x = 113,625 × 31,364.88
  4. Step 4: Simplify right side
    75,729.12x = 3,563,834,490
  5. Step 5: Solve for x
    x = 3,563,834,490/75,729.12
  6. Step 6: Final answer
    x = 47,060.29

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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.