Home / 54,128,456.80-81,192,685.20-42,649,331.20

Finding the Fourth Proportional to 54,128,456.80, 81,192,685.20 and 42,649,331.20

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Solution

The fourth proportional to 54,128,456.80, 81,192,685.20 and 42,649,331.20 is: 63,973,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128,456.80 : 81,192,685.20 = 42,649,331.20 : x
  2. Step 2: Convert to fraction form
    54,128,456.80/81,192,685.20 = 42,649,331.20/x
  3. Step 3: Cross multiply
    54,128,456.80x = 81,192,685.20 × 42,649,331.20
  4. Step 4: Simplify right side
    54,128,456.80x = 3,462,813,722,112,138.50
  5. Step 5: Solve for x
    x = 3,462,813,722,112,138.50/54,128,456.80
  6. Step 6: Final answer
    x = 63,973,996.80

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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.