Home / 81,584,962.20-122,094,008.10-74,782,517.40

Finding the Fourth Proportional to 81,584,962.20, 122,094,008.10 and 74,782,517.40

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Solution

The fourth proportional to 81,584,962.20, 122,094,008.10 and 74,782,517.40 is: 111,913,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584,962.20 : 122,094,008.10 = 74,782,517.40 : x
  2. Step 2: Convert to fraction form
    81,584,962.20/122,094,008.10 = 74,782,517.40/x
  3. Step 3: Cross multiply
    81,584,962.20x = 122,094,008.10 × 74,782,517.40
  4. Step 4: Simplify right side
    81,584,962.20x = 9,130,497,285,173,992
  5. Step 5: Solve for x
    x = 9,130,497,285,173,992/81,584,962.20
  6. Step 6: Final answer
    x = 111,913,973.35

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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.