Home / 66,885.43-100,319.94-38,820.75

Finding the Fourth Proportional to 66,885.43, 100,319.94 and 38,820.75

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Solution

The fourth proportional to 66,885.43, 100,319.94 and 38,820.75 is: 58,226.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885.43 : 100,319.94 = 38,820.75 : x
  2. Step 2: Convert to fraction form
    66,885.43/100,319.94 = 38,820.75/x
  3. Step 3: Cross multiply
    66,885.43x = 100,319.94 × 38,820.75
  4. Step 4: Simplify right side
    66,885.43x = 3,894,495,310.76
  5. Step 5: Solve for x
    x = 3,894,495,310.76/66,885.43
  6. Step 6: Final answer
    x = 58,226.36

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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.