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Finding the Fourth Proportional to 66,475.96, 92,132.77 and 65,231.80

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Solution

The fourth proportional to 66,475.96, 92,132.77 and 65,231.80 is: 90,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.96 : 92,132.77 = 65,231.80 : x
  2. Step 2: Convert to fraction form
    66,475.96/92,132.77 = 65,231.80/x
  3. Step 3: Cross multiply
    66,475.96x = 92,132.77 × 65,231.80
  4. Step 4: Simplify right side
    66,475.96x = 6,009,986,426.09
  5. Step 5: Solve for x
    x = 6,009,986,426.09/66,475.96
  6. Step 6: Final answer
    x = 90,408.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.