Home / 81,487,976.40-122,189,974.20-30,343,669.20

Finding the Fourth Proportional to 81,487,976.40, 122,189,974.20 and 30,343,669.20

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Solution

The fourth proportional to 81,487,976.40, 122,189,974.20 and 30,343,669.20 is: 45,499,867.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487,976.40 : 122,189,974.20 = 30,343,669.20 : x
  2. Step 2: Convert to fraction form
    81,487,976.40/122,189,974.20 = 30,343,669.20/x
  3. Step 3: Cross multiply
    81,487,976.40x = 122,189,974.20 × 30,343,669.20
  4. Step 4: Simplify right side
    81,487,976.40x = 3,707,692,156,681,334.50
  5. Step 5: Solve for x
    x = 3,707,692,156,681,334.50/81,487,976.40
  6. Step 6: Final answer
    x = 45,499,867.84

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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.