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Finding the Fourth Proportional to 48.61, 72.78 and 32.32

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Solution

The fourth proportional to 48.61, 72.78 and 32.32 is: 48.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.61 : 72.78 = 32.32 : x
  2. Step 2: Convert to fraction form
    48.61/72.78 = 32.32/x
  3. Step 3: Cross multiply
    48.61x = 72.78 × 32.32
  4. Step 4: Simplify right side
    48.61x = 2,352.25
  5. Step 5: Solve for x
    x = 2,352.25/48.61
  6. Step 6: Final answer
    x = 48.39

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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.