Home / 87,909,359.50-121,314,917.19-49,278,191.50

Finding the Fourth Proportional to 87,909,359.50, 121,314,917.19 and 49,278,191.50

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Solution

The fourth proportional to 87,909,359.50, 121,314,917.19 and 49,278,191.50 is: 68,003,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909,359.50 : 121,314,917.19 = 49,278,191.50 : x
  2. Step 2: Convert to fraction form
    87,909,359.50/121,314,917.19 = 49,278,191.50/x
  3. Step 3: Cross multiply
    87,909,359.50x = 121,314,917.19 × 49,278,191.50
  4. Step 4: Simplify right side
    87,909,359.50x = 5,978,179,721,095,462
  5. Step 5: Solve for x
    x = 5,978,179,721,095,462/87,909,359.50
  6. Step 6: Final answer
    x = 68,003,904.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.