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Finding the Fourth Proportional to 67,206.65, 100,824.95 and 20,463.17

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Solution

The fourth proportional to 67,206.65, 100,824.95 and 20,463.17 is: 30,699.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,206.65 : 100,824.95 = 20,463.17 : x
  2. Step 2: Convert to fraction form
    67,206.65/100,824.95 = 20,463.17/x
  3. Step 3: Cross multiply
    67,206.65x = 100,824.95 × 20,463.17
  4. Step 4: Simplify right side
    67,206.65x = 2,063,197,639.12
  5. Step 5: Solve for x
    x = 2,063,197,639.12/67,206.65
  6. Step 6: Final answer
    x = 30,699.31

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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.