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Finding the Fourth Proportional to 70,109.92, 105,165.17 and 17,519.45

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Solution

The fourth proportional to 70,109.92, 105,165.17 and 17,519.45 is: 26,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,109.92 : 105,165.17 = 17,519.45 : x
  2. Step 2: Convert to fraction form
    70,109.92/105,165.17 = 17,519.45/x
  3. Step 3: Cross multiply
    70,109.92x = 105,165.17 × 17,519.45
  4. Step 4: Simplify right side
    70,109.92x = 1,842,435,849.96
  5. Step 5: Solve for x
    x = 1,842,435,849.96/70,109.92
  6. Step 6: Final answer
    x = 26,279.25

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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.