Home / 79,787.30-119,587.53-51,287.90

Finding the Fourth Proportional to 79,787.30, 119,587.53 and 51,287.90

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Solution

The fourth proportional to 79,787.30, 119,587.53 and 51,287.90 is: 76,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,787.30 : 119,587.53 = 51,287.90 : x
  2. Step 2: Convert to fraction form
    79,787.30/119,587.53 = 51,287.90/x
  3. Step 3: Cross multiply
    79,787.30x = 119,587.53 × 51,287.90
  4. Step 4: Simplify right side
    79,787.30x = 6,133,393,279.89
  5. Step 5: Solve for x
    x = 6,133,393,279.89/79,787.30
  6. Step 6: Final answer
    x = 76,871.80

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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.