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Finding the Fourth Proportional to 92,486.40, 138,794.40 and 59,287.20

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Solution

The fourth proportional to 92,486.40, 138,794.40 and 59,287.20 is: 88,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,486.40 : 138,794.40 = 59,287.20 : x
  2. Step 2: Convert to fraction form
    92,486.40/138,794.40 = 59,287.20/x
  3. Step 3: Cross multiply
    92,486.40x = 138,794.40 × 59,287.20
  4. Step 4: Simplify right side
    92,486.40x = 8,228,731,351.68
  5. Step 5: Solve for x
    x = 8,228,731,351.68/92,486.40
  6. Step 6: Final answer
    x = 88,972.34

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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.