Home / 54,686.40-82,029.60-45,355.20

Finding the Fourth Proportional to 54,686.40, 82,029.60 and 45,355.20

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Solution

The fourth proportional to 54,686.40, 82,029.60 and 45,355.20 is: 68,032.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,686.40 : 82,029.60 = 45,355.20 : x
  2. Step 2: Convert to fraction form
    54,686.40/82,029.60 = 45,355.20/x
  3. Step 3: Cross multiply
    54,686.40x = 82,029.60 × 45,355.20
  4. Step 4: Simplify right side
    54,686.40x = 3,720,468,913.92
  5. Step 5: Solve for x
    x = 3,720,468,913.92/54,686.40
  6. Step 6: Final answer
    x = 68,032.80

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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.