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Finding the Fourth Proportional to 70,234.52, 105,336.14 and 20,303.68

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Solution

The fourth proportional to 70,234.52, 105,336.14 and 20,303.68 is: 30,451.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,234.52 : 105,336.14 = 20,303.68 : x
  2. Step 2: Convert to fraction form
    70,234.52/105,336.14 = 20,303.68/x
  3. Step 3: Cross multiply
    70,234.52x = 105,336.14 × 20,303.68
  4. Step 4: Simplify right side
    70,234.52x = 2,138,711,279.00
  5. Step 5: Solve for x
    x = 2,138,711,279.00/70,234.52
  6. Step 6: Final answer
    x = 30,451.00

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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.