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Finding the Fourth Proportional to 66,530.40, 99,661.20 and 41,493.60

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Solution

The fourth proportional to 66,530.40, 99,661.20 and 41,493.60 is: 62,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,530.40 : 99,661.20 = 41,493.60 : x
  2. Step 2: Convert to fraction form
    66,530.40/99,661.20 = 41,493.60/x
  3. Step 3: Cross multiply
    66,530.40x = 99,661.20 × 41,493.60
  4. Step 4: Simplify right side
    66,530.40x = 4,135,301,968.32
  5. Step 5: Solve for x
    x = 4,135,301,968.32/66,530.40
  6. Step 6: Final answer
    x = 62,156.58

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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.