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Finding the Fourth Proportional to 70,613.76, 105,920.54 and 18,023.24

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Solution

The fourth proportional to 70,613.76, 105,920.54 and 18,023.24 is: 27,034.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,613.76 : 105,920.54 = 18,023.24 : x
  2. Step 2: Convert to fraction form
    70,613.76/105,920.54 = 18,023.24/x
  3. Step 3: Cross multiply
    70,613.76x = 105,920.54 × 18,023.24
  4. Step 4: Simplify right side
    70,613.76x = 1,909,031,313.35
  5. Step 5: Solve for x
    x = 1,909,031,313.35/70,613.76
  6. Step 6: Final answer
    x = 27,034.83

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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.