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Finding the Fourth Proportional to 70,520.86, 105,713.84 and 26,135.69

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Solution

The fourth proportional to 70,520.86, 105,713.84 and 26,135.69 is: 39,178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,520.86 : 105,713.84 = 26,135.69 : x
  2. Step 2: Convert to fraction form
    70,520.86/105,713.84 = 26,135.69/x
  3. Step 3: Cross multiply
    70,520.86x = 105,713.84 × 26,135.69
  4. Step 4: Simplify right side
    70,520.86x = 2,762,904,480.57
  5. Step 5: Solve for x
    x = 2,762,904,480.57/70,520.86
  6. Step 6: Final answer
    x = 39,178.54

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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.