Home / 78,490.04-108,601.49-68,439.43

Finding the Fourth Proportional to 78,490.04, 108,601.49 and 68,439.43

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Solution

The fourth proportional to 78,490.04, 108,601.49 and 68,439.43 is: 94,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,490.04 : 108,601.49 = 68,439.43 : x
  2. Step 2: Convert to fraction form
    78,490.04/108,601.49 = 68,439.43/x
  3. Step 3: Cross multiply
    78,490.04x = 108,601.49 × 68,439.43
  4. Step 4: Simplify right side
    78,490.04x = 7,432,623,972.35
  5. Step 5: Solve for x
    x = 7,432,623,972.35/78,490.04
  6. Step 6: Final answer
    x = 94,695.12

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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.