Home / 75,909.20-113,639.52-72,661.52

Finding the Fourth Proportional to 75,909.20, 113,639.52 and 72,661.52

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Solution

The fourth proportional to 75,909.20, 113,639.52 and 72,661.52 is: 108,777.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,909.20 : 113,639.52 = 72,661.52 : x
  2. Step 2: Convert to fraction form
    75,909.20/113,639.52 = 72,661.52/x
  3. Step 3: Cross multiply
    75,909.20x = 113,639.52 × 72,661.52
  4. Step 4: Simplify right side
    75,909.20x = 8,257,220,255.27
  5. Step 5: Solve for x
    x = 8,257,220,255.27/75,909.20
  6. Step 6: Final answer
    x = 108,777.60

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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.