Home / 76,378.29-105,380.51-49,521.93

Finding the Fourth Proportional to 76,378.29, 105,380.51 and 49,521.93

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Solution

The fourth proportional to 76,378.29, 105,380.51 and 49,521.93 is: 68,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,378.29 : 105,380.51 = 49,521.93 : x
  2. Step 2: Convert to fraction form
    76,378.29/105,380.51 = 49,521.93/x
  3. Step 3: Cross multiply
    76,378.29x = 105,380.51 × 49,521.93
  4. Step 4: Simplify right side
    76,378.29x = 5,218,645,991.97
  5. Step 5: Solve for x
    x = 5,218,645,991.97/76,378.29
  6. Step 6: Final answer
    x = 68,326.30

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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.