Home / 72,332.12-108,515.40-30,188.73

Finding the Fourth Proportional to 72,332.12, 108,515.40 and 30,188.73

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Solution

The fourth proportional to 72,332.12, 108,515.40 and 30,188.73 is: 45,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,332.12 : 108,515.40 = 30,188.73 : x
  2. Step 2: Convert to fraction form
    72,332.12/108,515.40 = 30,188.73/x
  3. Step 3: Cross multiply
    72,332.12x = 108,515.40 × 30,188.73
  4. Step 4: Simplify right side
    72,332.12x = 3,275,942,405.17
  5. Step 5: Solve for x
    x = 3,275,942,405.17/72,332.12
  6. Step 6: Final answer
    x = 45,290.28

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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.