Home / 77,647.22-116,476.40-20,720.82

Finding the Fourth Proportional to 77,647.22, 116,476.40 and 20,720.82

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Solution

The fourth proportional to 77,647.22, 116,476.40 and 20,720.82 is: 31,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,647.22 : 116,476.40 = 20,720.82 : x
  2. Step 2: Convert to fraction form
    77,647.22/116,476.40 = 20,720.82/x
  3. Step 3: Cross multiply
    77,647.22x = 116,476.40 × 20,720.82
  4. Step 4: Simplify right side
    77,647.22x = 2,413,486,415.04
  5. Step 5: Solve for x
    x = 2,413,486,415.04/77,647.22
  6. Step 6: Final answer
    x = 31,082.72

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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.