Home / 75,418.61-113,126.43-30,438.77

Finding the Fourth Proportional to 75,418.61, 113,126.43 and 30,438.77

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Solution

The fourth proportional to 75,418.61, 113,126.43 and 30,438.77 is: 45,657.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,418.61 : 113,126.43 = 30,438.77 : x
  2. Step 2: Convert to fraction form
    75,418.61/113,126.43 = 30,438.77/x
  3. Step 3: Cross multiply
    75,418.61x = 113,126.43 × 30,438.77
  4. Step 4: Simplify right side
    75,418.61x = 3,443,428,932.20
  5. Step 5: Solve for x
    x = 3,443,428,932.20/75,418.61
  6. Step 6: Final answer
    x = 45,657.55

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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.