Home / 105,525.45-145,625.09-57,778.79

Finding the Fourth Proportional to 105,525.45, 145,625.09 and 57,778.79

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Solution

The fourth proportional to 105,525.45, 145,625.09 and 57,778.79 is: 79,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,525.45 : 145,625.09 = 57,778.79 : x
  2. Step 2: Convert to fraction form
    105,525.45/145,625.09 = 57,778.79/x
  3. Step 3: Cross multiply
    105,525.45x = 145,625.09 × 57,778.79
  4. Step 4: Simplify right side
    105,525.45x = 8,414,040,476.82
  5. Step 5: Solve for x
    x = 8,414,040,476.82/105,525.45
  6. Step 6: Final answer
    x = 79,734.70

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1.5x scale

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.