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Finding the Fourth Proportional to 66,418.40, 99,627.60 and 66,418.40

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Solution

The fourth proportional to 66,418.40, 99,627.60 and 66,418.40 is: 99,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,418.40 : 99,627.60 = 66,418.40 : x
  2. Step 2: Convert to fraction form
    66,418.40/99,627.60 = 66,418.40/x
  3. Step 3: Cross multiply
    66,418.40x = 99,627.60 × 66,418.40
  4. Step 4: Simplify right side
    66,418.40x = 6,617,105,787.84
  5. Step 5: Solve for x
    x = 6,617,105,787.84/66,418.40
  6. Step 6: Final answer
    x = 99,627.60

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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.