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Finding the Fourth Proportional to 40,002.60, 60,003.90 and 39,419.40

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Solution

The fourth proportional to 40,002.60, 60,003.90 and 39,419.40 is: 59,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,002.60 : 60,003.90 = 39,419.40 : x
  2. Step 2: Convert to fraction form
    40,002.60/60,003.90 = 39,419.40/x
  3. Step 3: Cross multiply
    40,002.60x = 60,003.90 × 39,419.40
  4. Step 4: Simplify right side
    40,002.60x = 2,365,317,735.66
  5. Step 5: Solve for x
    x = 2,365,317,735.66/40,002.60
  6. Step 6: Final answer
    x = 59,129.10

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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.