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Finding the Fourth Proportional to 34,935.20, 52,402.95 and 8,639.87

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Solution

The fourth proportional to 34,935.20, 52,402.95 and 8,639.87 is: 12,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,935.20 : 52,402.95 = 8,639.87 : x
  2. Step 2: Convert to fraction form
    34,935.20/52,402.95 = 8,639.87/x
  3. Step 3: Cross multiply
    34,935.20x = 52,402.95 × 8,639.87
  4. Step 4: Simplify right side
    34,935.20x = 452,754,413.60
  5. Step 5: Solve for x
    x = 452,754,413.60/34,935.20
  6. Step 6: Final answer
    x = 12,959.84

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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.