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Finding the Fourth Proportional to 57,643.50, 79,613.64 and 38,747.82

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Solution

The fourth proportional to 57,643.50, 79,613.64 and 38,747.82 is: 53,516.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,643.50 : 79,613.64 = 38,747.82 : x
  2. Step 2: Convert to fraction form
    57,643.50/79,613.64 = 38,747.82/x
  3. Step 3: Cross multiply
    57,643.50x = 79,613.64 × 38,747.82
  4. Step 4: Simplify right side
    57,643.50x = 3,084,854,992.26
  5. Step 5: Solve for x
    x = 3,084,854,992.26/57,643.50
  6. Step 6: Final answer
    x = 53,516.09

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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.