Home / 78,068,407.86-107,735,040.50-43,261,679.43

Finding the Fourth Proportional to 78,068,407.86, 107,735,040.50 and 43,261,679.43

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Solution

The fourth proportional to 78,068,407.86, 107,735,040.50 and 43,261,679.43 is: 59,701,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,068,407.86 : 107,735,040.50 = 43,261,679.43 : x
  2. Step 2: Convert to fraction form
    78,068,407.86/107,735,040.50 = 43,261,679.43/x
  3. Step 3: Cross multiply
    78,068,407.86x = 107,735,040.50 × 43,261,679.43
  4. Step 4: Simplify right side
    78,068,407.86x = 4,660,798,785,272,759
  5. Step 5: Solve for x
    x = 4,660,798,785,272,759/78,068,407.86
  6. Step 6: Final answer
    x = 59,701,470.97

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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.