Home / 81,615,820.80-122,423,731.20-27,763,132.80

Finding the Fourth Proportional to 81,615,820.80, 122,423,731.20 and 27,763,132.80

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Solution

The fourth proportional to 81,615,820.80, 122,423,731.20 and 27,763,132.80 is: 41,644,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,615,820.80 : 122,423,731.20 = 27,763,132.80 : x
  2. Step 2: Convert to fraction form
    81,615,820.80/122,423,731.20 = 27,763,132.80/x
  3. Step 3: Cross multiply
    81,615,820.80x = 122,423,731.20 × 27,763,132.80
  4. Step 4: Simplify right side
    81,615,820.80x = 3,398,866,307,177,103.50
  5. Step 5: Solve for x
    x = 3,398,866,307,177,103.50/81,615,820.80
  6. Step 6: Final answer
    x = 41,644,699.20

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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.