Home / 90,742.76-125,225-50,998.76

Finding the Fourth Proportional to 90,742.76, 125,225 and 50,998.76

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Solution

The fourth proportional to 90,742.76, 125,225 and 50,998.76 is: 70,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.76 : 125,225 = 50,998.76 : x
  2. Step 2: Convert to fraction form
    90,742.76/125,225 = 50,998.76/x
  3. Step 3: Cross multiply
    90,742.76x = 125,225 × 50,998.76
  4. Step 4: Simplify right side
    90,742.76x = 6,386,319,721
  5. Step 5: Solve for x
    x = 6,386,319,721/90,742.76
  6. Step 6: Final answer
    x = 70,378.28

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Double scale
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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.