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Finding the Fourth Proportional to 92,188.80, 138,315.60 and 39,601.44

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Solution

The fourth proportional to 92,188.80, 138,315.60 and 39,601.44 is: 59,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,188.80 : 138,315.60 = 39,601.44 : x
  2. Step 2: Convert to fraction form
    92,188.80/138,315.60 = 39,601.44/x
  3. Step 3: Cross multiply
    92,188.80x = 138,315.60 × 39,601.44
  4. Step 4: Simplify right side
    92,188.80x = 5,477,496,934.46
  5. Step 5: Solve for x
    x = 5,477,496,934.46/92,188.80
  6. Step 6: Final answer
    x = 59,416.08

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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.