Home / 39,900.08-55,062.50-21,995.75

Finding the Fourth Proportional to 39,900.08, 55,062.50 and 21,995.75

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Solution

The fourth proportional to 39,900.08, 55,062.50 and 21,995.75 is: 30,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.08 : 55,062.50 = 21,995.75 : x
  2. Step 2: Convert to fraction form
    39,900.08/55,062.50 = 21,995.75/x
  3. Step 3: Cross multiply
    39,900.08x = 55,062.50 × 21,995.75
  4. Step 4: Simplify right side
    39,900.08x = 1,211,141,012.05
  5. Step 5: Solve for x
    x = 1,211,141,012.05/39,900.08
  6. Step 6: Final answer
    x = 30,354.35

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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.