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Finding the Fourth Proportional to 92,254.20, 138,413.70 and 39,679.80

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Solution

The fourth proportional to 92,254.20, 138,413.70 and 39,679.80 is: 59,533.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,254.20 : 138,413.70 = 39,679.80 : x
  2. Step 2: Convert to fraction form
    92,254.20/138,413.70 = 39,679.80/x
  3. Step 3: Cross multiply
    92,254.20x = 138,413.70 × 39,679.80
  4. Step 4: Simplify right side
    92,254.20x = 5,492,227,933.26
  5. Step 5: Solve for x
    x = 5,492,227,933.26/92,254.20
  6. Step 6: Final answer
    x = 59,533.64

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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.