Home / 81,487,977.40-122,189,975.70-30,343,670.20

Finding the Fourth Proportional to 81,487,977.40, 122,189,975.70 and 30,343,670.20

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Solution

The fourth proportional to 81,487,977.40, 122,189,975.70 and 30,343,670.20 is: 45,499,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487,977.40 : 122,189,975.70 = 30,343,670.20 : x
  2. Step 2: Convert to fraction form
    81,487,977.40/122,189,975.70 = 30,343,670.20/x
  3. Step 3: Cross multiply
    81,487,977.40x = 122,189,975.70 × 30,343,670.20
  4. Step 4: Simplify right side
    81,487,977.40x = 3,707,692,324,386,814
  5. Step 5: Solve for x
    x = 3,707,692,324,386,814/81,487,977.40
  6. Step 6: Final answer
    x = 45,499,869.34

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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.