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Finding the Fourth Proportional to 61.03, 91.39 and 43.03

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Solution

The fourth proportional to 61.03, 91.39 and 43.03 is: 64.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.03 : 91.39 = 43.03 : x
  2. Step 2: Convert to fraction form
    61.03/91.39 = 43.03/x
  3. Step 3: Cross multiply
    61.03x = 91.39 × 43.03
  4. Step 4: Simplify right side
    61.03x = 3,932.51
  5. Step 5: Solve for x
    x = 3,932.51/61.03
  6. Step 6: Final answer
    x = 64.44

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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.