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Finding the Fourth Proportional to 66,473.60, 99,564.60 and 57,725.60

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Solution

The fourth proportional to 66,473.60, 99,564.60 and 57,725.60 is: 86,461.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473.60 : 99,564.60 = 57,725.60 : x
  2. Step 2: Convert to fraction form
    66,473.60/99,564.60 = 57,725.60/x
  3. Step 3: Cross multiply
    66,473.60x = 99,564.60 × 57,725.60
  4. Step 4: Simplify right side
    66,473.60x = 5,747,426,273.76
  5. Step 5: Solve for x
    x = 5,747,426,273.76/66,473.60
  6. Step 6: Final answer
    x = 86,461.79

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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.