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Finding the Fourth Proportional to 61, 91.54 and 32.50

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Solution

The fourth proportional to 61, 91.54 and 32.50 is: 48.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61 : 91.54 = 32.50 : x
  2. Step 2: Convert to fraction form
    61/91.54 = 32.50/x
  3. Step 3: Cross multiply
    61x = 91.54 × 32.50
  4. Step 4: Simplify right side
    61x = 2,975.05
  5. Step 5: Solve for x
    x = 2,975.05/61
  6. Step 6: Final answer
    x = 48.77

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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.