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Finding the Fourth Proportional to 55,999.24, 83,950.30 and 20,939.24

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Solution

The fourth proportional to 55,999.24, 83,950.30 and 20,939.24 is: 31,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.24 : 83,950.30 = 20,939.24 : x
  2. Step 2: Convert to fraction form
    55,999.24/83,950.30 = 20,939.24/x
  3. Step 3: Cross multiply
    55,999.24x = 83,950.30 × 20,939.24
  4. Step 4: Simplify right side
    55,999.24x = 1,757,855,479.77
  5. Step 5: Solve for x
    x = 1,757,855,479.77/55,999.24
  6. Step 6: Final answer
    x = 31,390.70

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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.