Home / 75,890.80-113,836.20-40,898.80

Finding the Fourth Proportional to 75,890.80, 113,836.20 and 40,898.80

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Solution

The fourth proportional to 75,890.80, 113,836.20 and 40,898.80 is: 61,348.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,890.80 : 113,836.20 = 40,898.80 : x
  2. Step 2: Convert to fraction form
    75,890.80/113,836.20 = 40,898.80/x
  3. Step 3: Cross multiply
    75,890.80x = 113,836.20 × 40,898.80
  4. Step 4: Simplify right side
    75,890.80x = 4,655,763,976.56
  5. Step 5: Solve for x
    x = 4,655,763,976.56/75,890.80
  6. Step 6: Final answer
    x = 61,348.20

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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.