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Finding the Fourth Proportional to 58.68, 88.20 and 40.68

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Solution

The fourth proportional to 58.68, 88.20 and 40.68 is: 61.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.68 : 88.20 = 40.68 : x
  2. Step 2: Convert to fraction form
    58.68/88.20 = 40.68/x
  3. Step 3: Cross multiply
    58.68x = 88.20 × 40.68
  4. Step 4: Simplify right side
    58.68x = 3,587.98
  5. Step 5: Solve for x
    x = 3,587.98/58.68
  6. Step 6: Final answer
    x = 61.14

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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.