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Finding the Fourth Proportional to 35,930.40, 53,895.60 and 28,413.60

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Solution

The fourth proportional to 35,930.40, 53,895.60 and 28,413.60 is: 42,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,930.40 : 53,895.60 = 28,413.60 : x
  2. Step 2: Convert to fraction form
    35,930.40/53,895.60 = 28,413.60/x
  3. Step 3: Cross multiply
    35,930.40x = 53,895.60 × 28,413.60
  4. Step 4: Simplify right side
    35,930.40x = 1,531,368,020.16
  5. Step 5: Solve for x
    x = 1,531,368,020.16/35,930.40
  6. Step 6: Final answer
    x = 42,620.40

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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.