Home / 80,107,401.60-120,108,011.76-28,982,767.68

Finding the Fourth Proportional to 80,107,401.60, 120,108,011.76 and 28,982,767.68

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Solution

The fourth proportional to 80,107,401.60, 120,108,011.76 and 28,982,767.68 is: 43,454,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,107,401.60 : 120,108,011.76 = 28,982,767.68 : x
  2. Step 2: Convert to fraction form
    80,107,401.60/120,108,011.76 = 28,982,767.68/x
  3. Step 3: Cross multiply
    80,107,401.60x = 120,108,011.76 × 28,982,767.68
  4. Step 4: Simplify right side
    80,107,401.60x = 3,481,062,601,346,788
  5. Step 5: Solve for x
    x = 3,481,062,601,346,788/80,107,401.60
  6. Step 6: Final answer
    x = 43,454,943.39

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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.