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Finding the Fourth Proportional to 73,979.52, 102,091.72 and 40,445.52

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Solution

The fourth proportional to 73,979.52, 102,091.72 and 40,445.52 is: 55,814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,979.52 : 102,091.72 = 40,445.52 : x
  2. Step 2: Convert to fraction form
    73,979.52/102,091.72 = 40,445.52/x
  3. Step 3: Cross multiply
    73,979.52x = 102,091.72 × 40,445.52
  4. Step 4: Simplify right side
    73,979.52x = 4,129,152,703.09
  5. Step 5: Solve for x
    x = 4,129,152,703.09/73,979.52
  6. Step 6: Final answer
    x = 55,814.81

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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.