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Finding the Fourth Proportional to 39,801.68, 54,865.02 and 29,714.78

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Solution

The fourth proportional to 39,801.68, 54,865.02 and 29,714.78 is: 40,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,801.68 : 54,865.02 = 29,714.78 : x
  2. Step 2: Convert to fraction form
    39,801.68/54,865.02 = 29,714.78/x
  3. Step 3: Cross multiply
    39,801.68x = 54,865.02 × 29,714.78
  4. Step 4: Simplify right side
    39,801.68x = 1,630,301,999.00
  5. Step 5: Solve for x
    x = 1,630,301,999.00/39,801.68
  6. Step 6: Final answer
    x = 40,960.63

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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.