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Finding the Fourth Proportional to 56,005.80, 83,979.53 and 26,415.69

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Solution

The fourth proportional to 56,005.80, 83,979.53 and 26,415.69 is: 39,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,005.80 : 83,979.53 = 26,415.69 : x
  2. Step 2: Convert to fraction form
    56,005.80/83,979.53 = 26,415.69/x
  3. Step 3: Cross multiply
    56,005.80x = 83,979.53 × 26,415.69
  4. Step 4: Simplify right side
    56,005.80x = 2,218,377,230.83
  5. Step 5: Solve for x
    x = 2,218,377,230.83/56,005.80
  6. Step 6: Final answer
    x = 39,609.78

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1.5x scale

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.