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Finding the Fourth Proportional to 61,975, 85,750.68 and 54,033.76

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Solution

The fourth proportional to 61,975, 85,750.68 and 54,033.76 is: 74,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,975 : 85,750.68 = 54,033.76 : x
  2. Step 2: Convert to fraction form
    61,975/85,750.68 = 54,033.76/x
  3. Step 3: Cross multiply
    61,975x = 85,750.68 × 54,033.76
  4. Step 4: Simplify right side
    61,975x = 4,633,431,662.96
  5. Step 5: Solve for x
    x = 4,633,431,662.96/61,975
  6. Step 6: Final answer
    x = 74,762.92

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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.