Home / 77,789.89-116,645.72-45,342.53

Finding the Fourth Proportional to 77,789.89, 116,645.72 and 45,342.53

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Solution

The fourth proportional to 77,789.89, 116,645.72 and 45,342.53 is: 67,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,789.89 : 116,645.72 = 45,342.53 : x
  2. Step 2: Convert to fraction form
    77,789.89/116,645.72 = 45,342.53/x
  3. Step 3: Cross multiply
    77,789.89x = 116,645.72 × 45,342.53
  4. Step 4: Simplify right side
    77,789.89x = 5,289,012,597.14
  5. Step 5: Solve for x
    x = 5,289,012,597.14/77,789.89
  6. Step 6: Final answer
    x = 67,991.00

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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.