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Finding the Fourth Proportional to 69,939.74, 96,516.86 and 38,108.64

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Solution

The fourth proportional to 69,939.74, 96,516.86 and 38,108.64 is: 52,589.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,939.74 : 96,516.86 = 38,108.64 : x
  2. Step 2: Convert to fraction form
    69,939.74/96,516.86 = 38,108.64/x
  3. Step 3: Cross multiply
    69,939.74x = 96,516.86 × 38,108.64
  4. Step 4: Simplify right side
    69,939.74x = 3,678,126,271.67
  5. Step 5: Solve for x
    x = 3,678,126,271.67/69,939.74
  6. Step 6: Final answer
    x = 52,589.93

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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.