Home / 81,032,534.61-121,540,621.71-54,938,912.55

Finding the Fourth Proportional to 81,032,534.61, 121,540,621.71 and 54,938,912.55

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Solution

The fourth proportional to 81,032,534.61, 121,540,621.71 and 54,938,912.55 is: 82,402,822.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,032,534.61 : 121,540,621.71 = 54,938,912.55 : x
  2. Step 2: Convert to fraction form
    81,032,534.61/121,540,621.71 = 54,938,912.55/x
  3. Step 3: Cross multiply
    81,032,534.61x = 121,540,621.71 × 54,938,912.55
  4. Step 4: Simplify right side
    81,032,534.61x = 6,677,309,587,398,321
  5. Step 5: Solve for x
    x = 6,677,309,587,398,321/81,032,534.61
  6. Step 6: Final answer
    x = 82,402,822.76

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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.