Home / 78,106.15-107,760.04-51,246.15

Finding the Fourth Proportional to 78,106.15, 107,760.04 and 51,246.15

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Solution

The fourth proportional to 78,106.15, 107,760.04 and 51,246.15 is: 70,702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,106.15 : 107,760.04 = 51,246.15 : x
  2. Step 2: Convert to fraction form
    78,106.15/107,760.04 = 51,246.15/x
  3. Step 3: Cross multiply
    78,106.15x = 107,760.04 × 51,246.15
  4. Step 4: Simplify right side
    78,106.15x = 5,522,286,917.62
  5. Step 5: Solve for x
    x = 5,522,286,917.62/78,106.15
  6. Step 6: Final answer
    x = 70,702.33

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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.