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Finding the Fourth Proportional to 66,990.52, 100,484.74 and 22,648.42

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Solution

The fourth proportional to 66,990.52, 100,484.74 and 22,648.42 is: 33,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.52 : 100,484.74 = 22,648.42 : x
  2. Step 2: Convert to fraction form
    66,990.52/100,484.74 = 22,648.42/x
  3. Step 3: Cross multiply
    66,990.52x = 100,484.74 × 22,648.42
  4. Step 4: Simplify right side
    66,990.52x = 2,275,820,595.11
  5. Step 5: Solve for x
    x = 2,275,820,595.11/66,990.52
  6. Step 6: Final answer
    x = 33,972.28

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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.