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Finding the Fourth Proportional to 66,497.60, 99,600.60 and 57,749.60

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Solution

The fourth proportional to 66,497.60, 99,600.60 and 57,749.60 is: 86,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.60 : 99,600.60 = 57,749.60 : x
  2. Step 2: Convert to fraction form
    66,497.60/99,600.60 = 57,749.60/x
  3. Step 3: Cross multiply
    66,497.60x = 99,600.60 × 57,749.60
  4. Step 4: Simplify right side
    66,497.60x = 5,751,894,809.76
  5. Step 5: Solve for x
    x = 5,751,894,809.76/66,497.60
  6. Step 6: Final answer
    x = 86,497.78

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1.5x scale

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.