Home / 91,427.76-126,181.98-51,143.76

Finding the Fourth Proportional to 91,427.76, 126,181.98 and 51,143.76

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Solution

The fourth proportional to 91,427.76, 126,181.98 and 51,143.76 is: 70,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,427.76 : 126,181.98 = 51,143.76 : x
  2. Step 2: Convert to fraction form
    91,427.76/126,181.98 = 51,143.76/x
  3. Step 3: Cross multiply
    91,427.76x = 126,181.98 × 51,143.76
  4. Step 4: Simplify right side
    91,427.76x = 6,453,420,901.44
  5. Step 5: Solve for x
    x = 6,453,420,901.44/91,427.76
  6. Step 6: Final answer
    x = 70,584.92

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1.5x scale

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.