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Finding the Fourth Proportional to 66,851.81, 100,278.52 and 22,478.39

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Solution

The fourth proportional to 66,851.81, 100,278.52 and 22,478.39 is: 33,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,851.81 : 100,278.52 = 22,478.39 : x
  2. Step 2: Convert to fraction form
    66,851.81/100,278.52 = 22,478.39/x
  3. Step 3: Cross multiply
    66,851.81x = 100,278.52 × 22,478.39
  4. Step 4: Simplify right side
    66,851.81x = 2,254,099,179.79
  5. Step 5: Solve for x
    x = 2,254,099,179.79/66,851.81
  6. Step 6: Final answer
    x = 33,717.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.