Home / 72,539,998.20-108,809,997.30-68,382,948.60

Finding the Fourth Proportional to 72,539,998.20, 108,809,997.30 and 68,382,948.60

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Solution

The fourth proportional to 72,539,998.20, 108,809,997.30 and 68,382,948.60 is: 102,574,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539,998.20 : 108,809,997.30 = 68,382,948.60 : x
  2. Step 2: Convert to fraction form
    72,539,998.20/108,809,997.30 = 68,382,948.60/x
  3. Step 3: Cross multiply
    72,539,998.20x = 108,809,997.30 × 68,382,948.60
  4. Step 4: Simplify right side
    72,539,998.20x = 7,440,748,452,532,038
  5. Step 5: Solve for x
    x = 7,440,748,452,532,038/72,539,998.20
  6. Step 6: Final answer
    x = 102,574,422.90

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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.