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Finding the Fourth Proportional to 56,413.16, 84,619.74 and 28,730.60

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Solution

The fourth proportional to 56,413.16, 84,619.74 and 28,730.60 is: 43,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,413.16 : 84,619.74 = 28,730.60 : x
  2. Step 2: Convert to fraction form
    56,413.16/84,619.74 = 28,730.60/x
  3. Step 3: Cross multiply
    56,413.16x = 84,619.74 × 28,730.60
  4. Step 4: Simplify right side
    56,413.16x = 2,431,175,902.04
  5. Step 5: Solve for x
    x = 2,431,175,902.04/56,413.16
  6. Step 6: Final answer
    x = 43,095.90

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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.