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Finding the Fourth Proportional to 66,820.74, 100,246.60 and 19,436.96

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Solution

The fourth proportional to 66,820.74, 100,246.60 and 19,436.96 is: 29,159.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.74 : 100,246.60 = 19,436.96 : x
  2. Step 2: Convert to fraction form
    66,820.74/100,246.60 = 19,436.96/x
  3. Step 3: Cross multiply
    66,820.74x = 100,246.60 × 19,436.96
  4. Step 4: Simplify right side
    66,820.74x = 1,948,489,154.34
  5. Step 5: Solve for x
    x = 1,948,489,154.34/66,820.74
  6. Step 6: Final answer
    x = 29,159.95

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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.