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Finding the Fourth Proportional to 66,938.25, 100,407.72 and 22,565.39

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Solution

The fourth proportional to 66,938.25, 100,407.72 and 22,565.39 is: 33,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,938.25 : 100,407.72 = 22,565.39 : x
  2. Step 2: Convert to fraction form
    66,938.25/100,407.72 = 22,565.39/x
  3. Step 3: Cross multiply
    66,938.25x = 100,407.72 × 22,565.39
  4. Step 4: Simplify right side
    66,938.25x = 2,265,739,360.81
  5. Step 5: Solve for x
    x = 2,265,739,360.81/66,938.25
  6. Step 6: Final answer
    x = 33,848.20

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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.