Home / 81,122,260.41-121,683,390.72-19,711,103.58

Finding the Fourth Proportional to 81,122,260.41, 121,683,390.72 and 19,711,103.58

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Solution

The fourth proportional to 81,122,260.41, 121,683,390.72 and 19,711,103.58 is: 29,566,655.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,122,260.41 : 121,683,390.72 = 19,711,103.58 : x
  2. Step 2: Convert to fraction form
    81,122,260.41/121,683,390.72 = 19,711,103.58/x
  3. Step 3: Cross multiply
    81,122,260.41x = 121,683,390.72 × 19,711,103.58
  4. Step 4: Simplify right side
    81,122,260.41x = 2,398,513,918,348,975
  5. Step 5: Solve for x
    x = 2,398,513,918,348,975/81,122,260.41
  6. Step 6: Final answer
    x = 29,566,655.39

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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.