Home / 81,203,293.80-121,804,649.10-19,791,750.60

Finding the Fourth Proportional to 81,203,293.80, 121,804,649.10 and 19,791,750.60

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Solution

The fourth proportional to 81,203,293.80, 121,804,649.10 and 19,791,750.60 is: 29,687,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203,293.80 : 121,804,649.10 = 19,791,750.60 : x
  2. Step 2: Convert to fraction form
    81,203,293.80/121,804,649.10 = 19,791,750.60/x
  3. Step 3: Cross multiply
    81,203,293.80x = 121,804,649.10 × 19,791,750.60
  4. Step 4: Simplify right side
    81,203,293.80x = 2,410,727,236,907,714.50
  5. Step 5: Solve for x
    x = 2,410,727,236,907,714.50/81,203,293.80
  6. Step 6: Final answer
    x = 29,687,554.83

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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.