Home / 91,921.40-126,846.78-51,636.86

Finding the Fourth Proportional to 91,921.40, 126,846.78 and 51,636.86

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Solution

The fourth proportional to 91,921.40, 126,846.78 and 51,636.86 is: 71,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,921.40 : 126,846.78 = 51,636.86 : x
  2. Step 2: Convert to fraction form
    91,921.40/126,846.78 = 51,636.86/x
  3. Step 3: Cross multiply
    91,921.40x = 126,846.78 × 51,636.86
  4. Step 4: Simplify right side
    91,921.40x = 6,549,969,420.31
  5. Step 5: Solve for x
    x = 6,549,969,420.31/91,921.40
  6. Step 6: Final answer
    x = 71,256.20

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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.