Home / 82,787,498.40-124,181,247.60-81,443,805.60

Finding the Fourth Proportional to 82,787,498.40, 124,181,247.60 and 81,443,805.60

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Solution

The fourth proportional to 82,787,498.40, 124,181,247.60 and 81,443,805.60 is: 122,165,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,787,498.40 : 124,181,247.60 = 81,443,805.60 : x
  2. Step 2: Convert to fraction form
    82,787,498.40/124,181,247.60 = 81,443,805.60/x
  3. Step 3: Cross multiply
    82,787,498.40x = 124,181,247.60 × 81,443,805.60
  4. Step 4: Simplify right side
    82,787,498.40x = 10,113,793,388,699,866
  5. Step 5: Solve for x
    x = 10,113,793,388,699,866/82,787,498.40
  6. Step 6: Final answer
    x = 122,165,708.40

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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.