Home / 76,561.31-114,865.27-39,147.66

Finding the Fourth Proportional to 76,561.31, 114,865.27 and 39,147.66

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Solution

The fourth proportional to 76,561.31, 114,865.27 and 39,147.66 is: 58,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,561.31 : 114,865.27 = 39,147.66 : x
  2. Step 2: Convert to fraction form
    76,561.31/114,865.27 = 39,147.66/x
  3. Step 3: Cross multiply
    76,561.31x = 114,865.27 × 39,147.66
  4. Step 4: Simplify right side
    76,561.31x = 4,496,706,535.77
  5. Step 5: Solve for x
    x = 4,496,706,535.77/76,561.31
  6. Step 6: Final answer
    x = 58,733.41

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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.