Home / 83,787.40-115,625.80-62,372.91

Finding the Fourth Proportional to 83,787.40, 115,625.80 and 62,372.91

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Solution

The fourth proportional to 83,787.40, 115,625.80 and 62,372.91 is: 86,074.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,787.40 : 115,625.80 = 62,372.91 : x
  2. Step 2: Convert to fraction form
    83,787.40/115,625.80 = 62,372.91/x
  3. Step 3: Cross multiply
    83,787.40x = 115,625.80 × 62,372.91
  4. Step 4: Simplify right side
    83,787.40x = 7,211,917,617.08
  5. Step 5: Solve for x
    x = 7,211,917,617.08/83,787.40
  6. Step 6: Final answer
    x = 86,074.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.