Home / 77,877.69-116,826.26-30,486.66

Finding the Fourth Proportional to 77,877.69, 116,826.26 and 30,486.66

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Solution

The fourth proportional to 77,877.69, 116,826.26 and 30,486.66 is: 45,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,877.69 : 116,826.26 = 30,486.66 : x
  2. Step 2: Convert to fraction form
    77,877.69/116,826.26 = 30,486.66/x
  3. Step 3: Cross multiply
    77,877.69x = 116,826.26 × 30,486.66
  4. Step 4: Simplify right side
    77,877.69x = 3,561,642,315.26
  5. Step 5: Solve for x
    x = 3,561,642,315.26/77,877.69
  6. Step 6: Final answer
    x = 45,733.80

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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.