Home / 115,704.25-159,671.15-64,716.77

Finding the Fourth Proportional to 115,704.25, 159,671.15 and 64,716.77

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Solution

The fourth proportional to 115,704.25, 159,671.15 and 64,716.77 is: 89,308.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,704.25 : 159,671.15 = 64,716.77 : x
  2. Step 2: Convert to fraction form
    115,704.25/159,671.15 = 64,716.77/x
  3. Step 3: Cross multiply
    115,704.25x = 159,671.15 × 64,716.77
  4. Step 4: Simplify right side
    115,704.25x = 10,333,401,408.47
  5. Step 5: Solve for x
    x = 10,333,401,408.47/115,704.25
  6. Step 6: Final answer
    x = 89,308.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.