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Finding the Fourth Proportional to 61,613.96, 85,020.94 and 45,489.83

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Solution

The fourth proportional to 61,613.96, 85,020.94 and 45,489.83 is: 62,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,613.96 : 85,020.94 = 45,489.83 : x
  2. Step 2: Convert to fraction form
    61,613.96/85,020.94 = 45,489.83/x
  3. Step 3: Cross multiply
    61,613.96x = 85,020.94 × 45,489.83
  4. Step 4: Simplify right side
    61,613.96x = 3,867,588,107.04
  5. Step 5: Solve for x
    x = 3,867,588,107.04/61,613.96
  6. Step 6: Final answer
    x = 62,771.30

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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.