Home / 80,380,852.40-120,571,278.60-76,685,697.20

Finding the Fourth Proportional to 80,380,852.40, 120,571,278.60 and 76,685,697.20

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Solution

The fourth proportional to 80,380,852.40, 120,571,278.60 and 76,685,697.20 is: 115,028,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380,852.40 : 120,571,278.60 = 76,685,697.20 : x
  2. Step 2: Convert to fraction form
    80,380,852.40/120,571,278.60 = 76,685,697.20/x
  3. Step 3: Cross multiply
    80,380,852.40x = 120,571,278.60 × 76,685,697.20
  4. Step 4: Simplify right side
    80,380,852.40x = 9,246,092,561,736,440
  5. Step 5: Solve for x
    x = 9,246,092,561,736,440/80,380,852.40
  6. Step 6: Final answer
    x = 115,028,545.80

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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.