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Finding the Fourth Proportional to 70,239.76, 96,930.96 and 40,023.76

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Solution

The fourth proportional to 70,239.76, 96,930.96 and 40,023.76 is: 55,232.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,239.76 : 96,930.96 = 40,023.76 : x
  2. Step 2: Convert to fraction form
    70,239.76/96,930.96 = 40,023.76/x
  3. Step 3: Cross multiply
    70,239.76x = 96,930.96 × 40,023.76
  4. Step 4: Simplify right side
    70,239.76x = 3,879,541,479.61
  5. Step 5: Solve for x
    x = 3,879,541,479.61/70,239.76
  6. Step 6: Final answer
    x = 55,232.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.