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Finding the Fourth Proportional to 76,626.40, 114,680.40 and 67,295.20

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Solution

The fourth proportional to 76,626.40, 114,680.40 and 67,295.20 is: 100,715.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,626.40 : 114,680.40 = 67,295.20 : x
  2. Step 2: Convert to fraction form
    76,626.40/114,680.40 = 67,295.20/x
  3. Step 3: Cross multiply
    76,626.40x = 114,680.40 × 67,295.20
  4. Step 4: Simplify right side
    76,626.40x = 7,717,440,454.08
  5. Step 5: Solve for x
    x = 7,717,440,454.08/76,626.40
  6. Step 6: Final answer
    x = 100,715.16

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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.