Home / 77,608.19-116,493.73-68,780.00

Finding the Fourth Proportional to 77,608.19, 116,493.73 and 68,780.00

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Solution

The fourth proportional to 77,608.19, 116,493.73 and 68,780.00 is: 103,242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,608.19 : 116,493.73 = 68,780.00 : x
  2. Step 2: Convert to fraction form
    77,608.19/116,493.73 = 68,780.00/x
  3. Step 3: Cross multiply
    77,608.19x = 116,493.73 × 68,780.00
  4. Step 4: Simplify right side
    77,608.19x = 8,012,438,868.68
  5. Step 5: Solve for x
    x = 8,012,438,868.68/77,608.19
  6. Step 6: Final answer
    x = 103,242.18

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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.