Home / 75,819.10-113,801.55-38,421.40

Finding the Fourth Proportional to 75,819.10, 113,801.55 and 38,421.40

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Solution

The fourth proportional to 75,819.10, 113,801.55 and 38,421.40 is: 57,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,819.10 : 113,801.55 = 38,421.40 : x
  2. Step 2: Convert to fraction form
    75,819.10/113,801.55 = 38,421.40/x
  3. Step 3: Cross multiply
    75,819.10x = 113,801.55 × 38,421.40
  4. Step 4: Simplify right side
    75,819.10x = 4,372,414,873.17
  5. Step 5: Solve for x
    x = 4,372,414,873.17/75,819.10
  6. Step 6: Final answer
    x = 57,669.04

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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.