Home / 92,021.76-126,979.20-54,295.68

Finding the Fourth Proportional to 92,021.76, 126,979.20 and 54,295.68

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Solution

The fourth proportional to 92,021.76, 126,979.20 and 54,295.68 is: 74,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,021.76 : 126,979.20 = 54,295.68 : x
  2. Step 2: Convert to fraction form
    92,021.76/126,979.20 = 54,295.68/x
  3. Step 3: Cross multiply
    92,021.76x = 126,979.20 × 54,295.68
  4. Step 4: Simplify right side
    92,021.76x = 6,894,422,009.86
  5. Step 5: Solve for x
    x = 6,894,422,009.86/92,021.76
  6. Step 6: Final answer
    x = 74,921.65

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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.