Home / 75,084.20-112,626.30-72,459.80

Finding the Fourth Proportional to 75,084.20, 112,626.30 and 72,459.80

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Solution

The fourth proportional to 75,084.20, 112,626.30 and 72,459.80 is: 108,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,084.20 : 112,626.30 = 72,459.80 : x
  2. Step 2: Convert to fraction form
    75,084.20/112,626.30 = 72,459.80/x
  3. Step 3: Cross multiply
    75,084.20x = 112,626.30 × 72,459.80
  4. Step 4: Simplify right side
    75,084.20x = 8,160,879,172.74
  5. Step 5: Solve for x
    x = 8,160,879,172.74/75,084.20
  6. Step 6: Final answer
    x = 108,689.70

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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.