Home / 51,391.60-77,091.18-21,806.08

Finding the Fourth Proportional to 51,391.60, 77,091.18 and 21,806.08

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Solution

The fourth proportional to 51,391.60, 77,091.18 and 21,806.08 is: 32,710.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,391.60 : 77,091.18 = 21,806.08 : x
  2. Step 2: Convert to fraction form
    51,391.60/77,091.18 = 21,806.08/x
  3. Step 3: Cross multiply
    51,391.60x = 77,091.18 × 21,806.08
  4. Step 4: Simplify right side
    51,391.60x = 1,681,056,438.37
  5. Step 5: Solve for x
    x = 1,681,056,438.37/51,391.60
  6. Step 6: Final answer
    x = 32,710.72

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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.