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Finding the Fourth Proportional to 43,419.60, 65,129.40 and 41,000.40

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Solution

The fourth proportional to 43,419.60, 65,129.40 and 41,000.40 is: 61,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,419.60 : 65,129.40 = 41,000.40 : x
  2. Step 2: Convert to fraction form
    43,419.60/65,129.40 = 41,000.40/x
  3. Step 3: Cross multiply
    43,419.60x = 65,129.40 × 41,000.40
  4. Step 4: Simplify right side
    43,419.60x = 2,670,331,451.76
  5. Step 5: Solve for x
    x = 2,670,331,451.76/43,419.60
  6. Step 6: Final answer
    x = 61,500.60

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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.