Home / 81,798,280.40-122,650,764.60-30,681,966.80

Finding the Fourth Proportional to 81,798,280.40, 122,650,764.60 and 30,681,966.80

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Solution

The fourth proportional to 81,798,280.40, 122,650,764.60 and 30,681,966.80 is: 46,005,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798,280.40 : 122,650,764.60 = 30,681,966.80 : x
  2. Step 2: Convert to fraction form
    81,798,280.40/122,650,764.60 = 30,681,966.80/x
  3. Step 3: Cross multiply
    81,798,280.40x = 122,650,764.60 × 30,681,966.80
  4. Step 4: Simplify right side
    81,798,280.40x = 3,763,166,687,451,815
  5. Step 5: Solve for x
    x = 3,763,166,687,451,815/81,798,280.40
  6. Step 6: Final answer
    x = 46,005,449.86

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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.