Home / 91,987.22-126,942.72-51,702.68

Finding the Fourth Proportional to 91,987.22, 126,942.72 and 51,702.68

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Solution

The fourth proportional to 91,987.22, 126,942.72 and 51,702.68 is: 71,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,987.22 : 126,942.72 = 51,702.68 : x
  2. Step 2: Convert to fraction form
    91,987.22/126,942.72 = 51,702.68/x
  3. Step 3: Cross multiply
    91,987.22x = 126,942.72 × 51,702.68
  4. Step 4: Simplify right side
    91,987.22x = 6,563,278,830.49
  5. Step 5: Solve for x
    x = 6,563,278,830.49/91,987.22
  6. Step 6: Final answer
    x = 71,349.90

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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.