Home / 82,878.36-124,304.64-45,456.84

Finding the Fourth Proportional to 82,878.36, 124,304.64 and 45,456.84

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Solution

The fourth proportional to 82,878.36, 124,304.64 and 45,456.84 is: 68,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,878.36 : 124,304.64 = 45,456.84 : x
  2. Step 2: Convert to fraction form
    82,878.36/124,304.64 = 45,456.84/x
  3. Step 3: Cross multiply
    82,878.36x = 124,304.64 × 45,456.84
  4. Step 4: Simplify right side
    82,878.36x = 5,650,496,131.74
  5. Step 5: Solve for x
    x = 5,650,496,131.74/82,878.36
  6. Step 6: Final answer
    x = 68,178.18

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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.