Home / 76,389.19-105,436.46-52,199.95

Finding the Fourth Proportional to 76,389.19, 105,436.46 and 52,199.95

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Solution

The fourth proportional to 76,389.19, 105,436.46 and 52,199.95 is: 72,049.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389.19 : 105,436.46 = 52,199.95 : x
  2. Step 2: Convert to fraction form
    76,389.19/105,436.46 = 52,199.95/x
  3. Step 3: Cross multiply
    76,389.19x = 105,436.46 × 52,199.95
  4. Step 4: Simplify right side
    76,389.19x = 5,503,777,940.18
  5. Step 5: Solve for x
    x = 5,503,777,940.18/76,389.19
  6. Step 6: Final answer
    x = 72,049.17

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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.