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Finding the Fourth Proportional to 66,410.40, 99,615.60 and 40,101.60

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Solution

The fourth proportional to 66,410.40, 99,615.60 and 40,101.60 is: 60,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.40 : 99,615.60 = 40,101.60 : x
  2. Step 2: Convert to fraction form
    66,410.40/99,615.60 = 40,101.60/x
  3. Step 3: Cross multiply
    66,410.40x = 99,615.60 × 40,101.60
  4. Step 4: Simplify right side
    66,410.40x = 3,994,744,944.96
  5. Step 5: Solve for x
    x = 3,994,744,944.96/66,410.40
  6. Step 6: Final answer
    x = 60,152.40

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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.