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Finding the Fourth Proportional to 70,668.30, 106,006.12 and 18,078.24

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Solution

The fourth proportional to 70,668.30, 106,006.12 and 18,078.24 is: 27,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,668.30 : 106,006.12 = 18,078.24 : x
  2. Step 2: Convert to fraction form
    70,668.30/106,006.12 = 18,078.24/x
  3. Step 3: Cross multiply
    70,668.30x = 106,006.12 × 18,078.24
  4. Step 4: Simplify right side
    70,668.30x = 1,916,404,078.83
  5. Step 5: Solve for x
    x = 1,916,404,078.83/70,668.30
  6. Step 6: Final answer
    x = 27,118.30

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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.