Home / 8,512,087.30-12,768,130.95-5,320,816.90

Finding the Fourth Proportional to 8,512,087.30, 12,768,130.95 and 5,320,816.90

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Solution

The fourth proportional to 8,512,087.30, 12,768,130.95 and 5,320,816.90 is: 7,981,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,087.30 : 12,768,130.95 = 5,320,816.90 : x
  2. Step 2: Convert to fraction form
    8,512,087.30/12,768,130.95 = 5,320,816.90/x
  3. Step 3: Cross multiply
    8,512,087.30x = 12,768,130.95 × 5,320,816.90
  4. Step 4: Simplify right side
    8,512,087.30x = 67,936,886,940,173.05
  5. Step 5: Solve for x
    x = 67,936,886,940,173.05/8,512,087.30
  6. Step 6: Final answer
    x = 7,981,225.35

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Similar ratio
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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.