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Finding the Fourth Proportional to 66,884.93, 100,319.19 and 38,820.25

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Solution

The fourth proportional to 66,884.93, 100,319.19 and 38,820.25 is: 58,225.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,884.93 : 100,319.19 = 38,820.25 : x
  2. Step 2: Convert to fraction form
    66,884.93/100,319.19 = 38,820.25/x
  3. Step 3: Cross multiply
    66,884.93x = 100,319.19 × 38,820.25
  4. Step 4: Simplify right side
    66,884.93x = 3,894,416,035.60
  5. Step 5: Solve for x
    x = 3,894,416,035.60/66,884.93
  6. Step 6: Final answer
    x = 58,225.61

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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.