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Finding the Fourth Proportional to 71,600.04, 98,808.96 and 39,771.90

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Solution

The fourth proportional to 71,600.04, 98,808.96 and 39,771.90 is: 54,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,600.04 : 98,808.96 = 39,771.90 : x
  2. Step 2: Convert to fraction form
    71,600.04/98,808.96 = 39,771.90/x
  3. Step 3: Cross multiply
    71,600.04x = 98,808.96 × 39,771.90
  4. Step 4: Simplify right side
    71,600.04x = 3,929,820,076.22
  5. Step 5: Solve for x
    x = 3,929,820,076.22/71,600.04
  6. Step 6: Final answer
    x = 54,885.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.