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Finding the Fourth Proportional to 70,489,156.74, 105,733,589.64 and 39,769,791

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Solution

The fourth proportional to 70,489,156.74, 105,733,589.64 and 39,769,791 is: 59,654,604.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489,156.74 : 105,733,589.64 = 39,769,791 : x
  2. Step 2: Convert to fraction form
    70,489,156.74/105,733,589.64 = 39,769,791/x
  3. Step 3: Cross multiply
    70,489,156.74x = 105,733,589.64 × 39,769,791
  4. Step 4: Simplify right side
    70,489,156.74x = 4,205,002,761,662,565.50
  5. Step 5: Solve for x
    x = 4,205,002,761,662,565.50/70,489,156.74
  6. Step 6: Final answer
    x = 59,654,604.43

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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.