Home / 76,748.40-115,135.20-24,145.20

Finding the Fourth Proportional to 76,748.40, 115,135.20 and 24,145.20

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Solution

The fourth proportional to 76,748.40, 115,135.20 and 24,145.20 is: 36,221.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,748.40 : 115,135.20 = 24,145.20 : x
  2. Step 2: Convert to fraction form
    76,748.40/115,135.20 = 24,145.20/x
  3. Step 3: Cross multiply
    76,748.40x = 115,135.20 × 24,145.20
  4. Step 4: Simplify right side
    76,748.40x = 2,779,962,431.04
  5. Step 5: Solve for x
    x = 2,779,962,431.04/76,748.40
  6. Step 6: Final answer
    x = 36,221.76

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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.