Home / 81,566,126.69-122,345,871.90-20,153,738.83

Finding the Fourth Proportional to 81,566,126.69, 122,345,871.90 and 20,153,738.83

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Solution

The fourth proportional to 81,566,126.69, 122,345,871.90 and 20,153,738.83 is: 30,229,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,566,126.69 : 122,345,871.90 = 20,153,738.83 : x
  2. Step 2: Convert to fraction form
    81,566,126.69/122,345,871.90 = 20,153,738.83/x
  3. Step 3: Cross multiply
    81,566,126.69x = 122,345,871.90 × 20,153,738.83
  4. Step 4: Simplify right side
    81,566,126.69x = 2,465,726,749,201,236
  5. Step 5: Solve for x
    x = 2,465,726,749,201,236/81,566,126.69
  6. Step 6: Final answer
    x = 30,229,788.39

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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.