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Finding the Fourth Proportional to 66,409.20, 99,498.60 and 43,023.60

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Solution

The fourth proportional to 66,409.20, 99,498.60 and 43,023.60 is: 64,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409.20 : 99,498.60 = 43,023.60 : x
  2. Step 2: Convert to fraction form
    66,409.20/99,498.60 = 43,023.60/x
  3. Step 3: Cross multiply
    66,409.20x = 99,498.60 × 43,023.60
  4. Step 4: Simplify right side
    66,409.20x = 4,280,787,966.96
  5. Step 5: Solve for x
    x = 4,280,787,966.96/66,409.20
  6. Step 6: Final answer
    x = 64,460.77

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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.