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Finding the Fourth Proportional to 68,615.80, 102,923.70 and 35,289.40

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Solution

The fourth proportional to 68,615.80, 102,923.70 and 35,289.40 is: 52,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,615.80 : 102,923.70 = 35,289.40 : x
  2. Step 2: Convert to fraction form
    68,615.80/102,923.70 = 35,289.40/x
  3. Step 3: Cross multiply
    68,615.80x = 102,923.70 × 35,289.40
  4. Step 4: Simplify right side
    68,615.80x = 3,632,115,618.78
  5. Step 5: Solve for x
    x = 3,632,115,618.78/68,615.80
  6. Step 6: Final answer
    x = 52,934.10

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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.