Home / 77,261.24-115,873.13-21,101.61

Finding the Fourth Proportional to 77,261.24, 115,873.13 and 21,101.61

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Solution

The fourth proportional to 77,261.24, 115,873.13 and 21,101.61 is: 31,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,261.24 : 115,873.13 = 21,101.61 : x
  2. Step 2: Convert to fraction form
    77,261.24/115,873.13 = 21,101.61/x
  3. Step 3: Cross multiply
    77,261.24x = 115,873.13 × 21,101.61
  4. Step 4: Simplify right side
    77,261.24x = 2,445,110,086.02
  5. Step 5: Solve for x
    x = 2,445,110,086.02/77,261.24
  6. Step 6: Final answer
    x = 31,647.30

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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.