Home / 81,777,205.40-122,665,808.10-54,567,426.20

Finding the Fourth Proportional to 81,777,205.40, 122,665,808.10 and 54,567,426.20

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Solution

The fourth proportional to 81,777,205.40, 122,665,808.10 and 54,567,426.20 is: 81,851,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777,205.40 : 122,665,808.10 = 54,567,426.20 : x
  2. Step 2: Convert to fraction form
    81,777,205.40/122,665,808.10 = 54,567,426.20/x
  3. Step 3: Cross multiply
    81,777,205.40x = 122,665,808.10 × 54,567,426.20
  4. Step 4: Simplify right side
    81,777,205.40x = 6,693,557,430,760,112
  5. Step 5: Solve for x
    x = 6,693,557,430,760,112/81,777,205.40
  6. Step 6: Final answer
    x = 81,851,139.30

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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.