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Finding the Fourth Proportional to 39,399, 54,370.62 and 29,336.10

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Solution

The fourth proportional to 39,399, 54,370.62 and 29,336.10 is: 40,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399 : 54,370.62 = 29,336.10 : x
  2. Step 2: Convert to fraction form
    39,399/54,370.62 = 29,336.10/x
  3. Step 3: Cross multiply
    39,399x = 54,370.62 × 29,336.10
  4. Step 4: Simplify right side
    39,399x = 1,595,021,945.38
  5. Step 5: Solve for x
    x = 1,595,021,945.38/39,399
  6. Step 6: Final answer
    x = 40,483.82

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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.