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Finding the Fourth Proportional to 60.04, 90.08 and 39.86

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Solution

The fourth proportional to 60.04, 90.08 and 39.86 is: 59.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.04 : 90.08 = 39.86 : x
  2. Step 2: Convert to fraction form
    60.04/90.08 = 39.86/x
  3. Step 3: Cross multiply
    60.04x = 90.08 × 39.86
  4. Step 4: Simplify right side
    60.04x = 3,590.43
  5. Step 5: Solve for x
    x = 3,590.43/60.04
  6. Step 6: Final answer
    x = 59.80

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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.