Home / 75,354.40-113,143.20-42,140.80

Finding the Fourth Proportional to 75,354.40, 113,143.20 and 42,140.80

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Solution

The fourth proportional to 75,354.40, 113,143.20 and 42,140.80 is: 63,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,354.40 : 113,143.20 = 42,140.80 : x
  2. Step 2: Convert to fraction form
    75,354.40/113,143.20 = 42,140.80/x
  3. Step 3: Cross multiply
    75,354.40x = 113,143.20 × 42,140.80
  4. Step 4: Simplify right side
    75,354.40x = 4,767,944,962.56
  5. Step 5: Solve for x
    x = 4,767,944,962.56/75,354.40
  6. Step 6: Final answer
    x = 63,273.61

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1.5x scale

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.