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Finding the Fourth Proportional to 67,999.60, 101,999.40 and 57,113.20

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Solution

The fourth proportional to 67,999.60, 101,999.40 and 57,113.20 is: 85,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.60 : 101,999.40 = 57,113.20 : x
  2. Step 2: Convert to fraction form
    67,999.60/101,999.40 = 57,113.20/x
  3. Step 3: Cross multiply
    67,999.60x = 101,999.40 × 57,113.20
  4. Step 4: Simplify right side
    67,999.60x = 5,825,512,132.08
  5. Step 5: Solve for x
    x = 5,825,512,132.08/67,999.60
  6. Step 6: Final answer
    x = 85,669.80

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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.