Home / 81,465,657.90-122,340,204.45-43,201,905.90

Finding the Fourth Proportional to 81,465,657.90, 122,340,204.45 and 43,201,905.90

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Solution

The fourth proportional to 81,465,657.90, 122,340,204.45 and 43,201,905.90 is: 64,878,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,657.90 : 122,340,204.45 = 43,201,905.90 : x
  2. Step 2: Convert to fraction form
    81,465,657.90/122,340,204.45 = 43,201,905.90/x
  3. Step 3: Cross multiply
    81,465,657.90x = 122,340,204.45 × 43,201,905.90
  4. Step 4: Simplify right side
    81,465,657.90x = 5,285,330,000,435,661
  5. Step 5: Solve for x
    x = 5,285,330,000,435,661/81,465,657.90
  6. Step 6: Final answer
    x = 64,878,012.85

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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.