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Finding the Fourth Proportional to 68,007.80, 102,011.70 and 26,454.80

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Solution

The fourth proportional to 68,007.80, 102,011.70 and 26,454.80 is: 39,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,007.80 : 102,011.70 = 26,454.80 : x
  2. Step 2: Convert to fraction form
    68,007.80/102,011.70 = 26,454.80/x
  3. Step 3: Cross multiply
    68,007.80x = 102,011.70 × 26,454.80
  4. Step 4: Simplify right side
    68,007.80x = 2,698,699,121.16
  5. Step 5: Solve for x
    x = 2,698,699,121.16/68,007.80
  6. Step 6: Final answer
    x = 39,682.20

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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.