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Finding the Fourth Proportional to 67,287, 92,851.60 and 40,413.52

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Solution

The fourth proportional to 67,287, 92,851.60 and 40,413.52 is: 55,767.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,287 : 92,851.60 = 40,413.52 : x
  2. Step 2: Convert to fraction form
    67,287/92,851.60 = 40,413.52/x
  3. Step 3: Cross multiply
    67,287x = 92,851.60 × 40,413.52
  4. Step 4: Simplify right side
    67,287x = 3,752,459,993.63
  5. Step 5: Solve for x
    x = 3,752,459,993.63/67,287
  6. Step 6: Final answer
    x = 55,767.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.