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Finding the Fourth Proportional to 90,649.71, 125,061.71 and 66,833.01

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Solution

The fourth proportional to 90,649.71, 125,061.71 and 66,833.01 is: 92,203.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.71 : 125,061.71 = 66,833.01 : x
  2. Step 2: Convert to fraction form
    90,649.71/125,061.71 = 66,833.01/x
  3. Step 3: Cross multiply
    90,649.71x = 125,061.71 × 66,833.01
  4. Step 4: Simplify right side
    90,649.71x = 8,358,250,180.88
  5. Step 5: Solve for x
    x = 8,358,250,180.88/90,649.71
  6. Step 6: Final answer
    x = 92,203.83

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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.