Home / 81,793,947.60-122,629,904.10-49,439,032.20

Finding the Fourth Proportional to 81,793,947.60, 122,629,904.10 and 49,439,032.20

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Solution

The fourth proportional to 81,793,947.60, 122,629,904.10 and 49,439,032.20 is: 74,121,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,793,947.60 : 122,629,904.10 = 49,439,032.20 : x
  2. Step 2: Convert to fraction form
    81,793,947.60/122,629,904.10 = 49,439,032.20/x
  3. Step 3: Cross multiply
    81,793,947.60x = 122,629,904.10 × 49,439,032.20
  4. Step 4: Simplify right side
    81,793,947.60x = 6,062,703,777,482,812
  5. Step 5: Solve for x
    x = 6,062,703,777,482,812/81,793,947.60
  6. Step 6: Final answer
    x = 74,121,667.38

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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.