Home / 78,214.73-117,321.42-28,275.98

Finding the Fourth Proportional to 78,214.73, 117,321.42 and 28,275.98

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Solution

The fourth proportional to 78,214.73, 117,321.42 and 28,275.98 is: 42,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.73 : 117,321.42 = 28,275.98 : x
  2. Step 2: Convert to fraction form
    78,214.73/117,321.42 = 28,275.98/x
  3. Step 3: Cross multiply
    78,214.73x = 117,321.42 × 28,275.98
  4. Step 4: Simplify right side
    78,214.73x = 3,317,378,125.49
  5. Step 5: Solve for x
    x = 3,317,378,125.49/78,214.73
  6. Step 6: Final answer
    x = 42,413.73

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1.5x scale

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.