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Finding the Fourth Proportional to 64,067.80, 96,091.80 and 21,938.20

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Solution

The fourth proportional to 64,067.80, 96,091.80 and 21,938.20 is: 32,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,067.80 : 96,091.80 = 21,938.20 : x
  2. Step 2: Convert to fraction form
    64,067.80/96,091.80 = 21,938.20/x
  3. Step 3: Cross multiply
    64,067.80x = 96,091.80 × 21,938.20
  4. Step 4: Simplify right side
    64,067.80x = 2,108,081,126.76
  5. Step 5: Solve for x
    x = 2,108,081,126.76/64,067.80
  6. Step 6: Final answer
    x = 32,903.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.