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Finding the Fourth Proportional to 66,600.96, 91,895.76 and 42,408.96

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Solution

The fourth proportional to 66,600.96, 91,895.76 and 42,408.96 is: 58,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.96 : 91,895.76 = 42,408.96 : x
  2. Step 2: Convert to fraction form
    66,600.96/91,895.76 = 42,408.96/x
  3. Step 3: Cross multiply
    66,600.96x = 91,895.76 × 42,408.96
  4. Step 4: Simplify right side
    66,600.96x = 3,897,203,610.01
  5. Step 5: Solve for x
    x = 3,897,203,610.01/66,600.96
  6. Step 6: Final answer
    x = 58,515.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.