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Finding the Fourth Proportional to 58.86, 88.10 and 40.86

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Solution

The fourth proportional to 58.86, 88.10 and 40.86 is: 61.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.86 : 88.10 = 40.86 : x
  2. Step 2: Convert to fraction form
    58.86/88.10 = 40.86/x
  3. Step 3: Cross multiply
    58.86x = 88.10 × 40.86
  4. Step 4: Simplify right side
    58.86x = 3,599.77
  5. Step 5: Solve for x
    x = 3,599.77/58.86
  6. Step 6: Final answer
    x = 61.16

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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.