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Finding the Fourth Proportional to 58.18, 87.36 and 48.16

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Solution

The fourth proportional to 58.18, 87.36 and 48.16 is: 72.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.18 : 87.36 = 48.16 : x
  2. Step 2: Convert to fraction form
    58.18/87.36 = 48.16/x
  3. Step 3: Cross multiply
    58.18x = 87.36 × 48.16
  4. Step 4: Simplify right side
    58.18x = 4,207.26
  5. Step 5: Solve for x
    x = 4,207.26/58.18
  6. Step 6: Final answer
    x = 72.31

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