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Finding the Fourth Proportional to 70,668.45, 106,002.13 and 18,077.85

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Solution

The fourth proportional to 70,668.45, 106,002.13 and 18,077.85 is: 27,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,668.45 : 106,002.13 = 18,077.85 : x
  2. Step 2: Convert to fraction form
    70,668.45/106,002.13 = 18,077.85/x
  3. Step 3: Cross multiply
    70,668.45x = 106,002.13 × 18,077.85
  4. Step 4: Simplify right side
    70,668.45x = 1,916,290,030.62
  5. Step 5: Solve for x
    x = 1,916,290,030.62/70,668.45
  6. Step 6: Final answer
    x = 27,116.63

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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.