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Finding the Fourth Proportional to 61.66, 85.05 and 37.06

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Solution

The fourth proportional to 61.66, 85.05 and 37.06 is: 51.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.66 : 85.05 = 37.06 : x
  2. Step 2: Convert to fraction form
    61.66/85.05 = 37.06/x
  3. Step 3: Cross multiply
    61.66x = 85.05 × 37.06
  4. Step 4: Simplify right side
    61.66x = 3,151.74
  5. Step 5: Solve for x
    x = 3,151.74/61.66
  6. Step 6: Final answer
    x = 51.11

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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.