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Finding the Fourth Proportional to 60,413.30, 90,717.15 and 45,638.90

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Solution

The fourth proportional to 60,413.30, 90,717.15 and 45,638.90 is: 68,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,413.30 : 90,717.15 = 45,638.90 : x
  2. Step 2: Convert to fraction form
    60,413.30/90,717.15 = 45,638.90/x
  3. Step 3: Cross multiply
    60,413.30x = 90,717.15 × 45,638.90
  4. Step 4: Simplify right side
    60,413.30x = 4,140,230,937.14
  5. Step 5: Solve for x
    x = 4,140,230,937.14/60,413.30
  6. Step 6: Final answer
    x = 68,531.78

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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.