Home / 30,320.40-45,479.61-8,132.61

Finding the Fourth Proportional to 30,320.40, 45,479.61 and 8,132.61

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Solution

The fourth proportional to 30,320.40, 45,479.61 and 8,132.61 is: 12,198.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.40 : 45,479.61 = 8,132.61 : x
  2. Step 2: Convert to fraction form
    30,320.40/45,479.61 = 8,132.61/x
  3. Step 3: Cross multiply
    30,320.40x = 45,479.61 × 8,132.61
  4. Step 4: Simplify right side
    30,320.40x = 369,867,931.08
  5. Step 5: Solve for x
    x = 369,867,931.08/30,320.40
  6. Step 6: Final answer
    x = 12,198.65

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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.