Home / 77,987.07-116,980.61-25,401.87

Finding the Fourth Proportional to 77,987.07, 116,980.61 and 25,401.87

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Solution

The fourth proportional to 77,987.07, 116,980.61 and 25,401.87 is: 38,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.07 : 116,980.61 = 25,401.87 : x
  2. Step 2: Convert to fraction form
    77,987.07/116,980.61 = 25,401.87/x
  3. Step 3: Cross multiply
    77,987.07x = 116,980.61 × 25,401.87
  4. Step 4: Simplify right side
    77,987.07x = 2,971,526,120.73
  5. Step 5: Solve for x
    x = 2,971,526,120.73/77,987.07
  6. Step 6: Final answer
    x = 38,102.81

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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.