Home / 70,378.37-105,568.23-17,787.86

Finding the Fourth Proportional to 70,378.37, 105,568.23 and 17,787.86

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Solution

The fourth proportional to 70,378.37, 105,568.23 and 17,787.86 is: 26,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,378.37 : 105,568.23 = 17,787.86 : x
  2. Step 2: Convert to fraction form
    70,378.37/105,568.23 = 17,787.86/x
  3. Step 3: Cross multiply
    70,378.37x = 105,568.23 × 17,787.86
  4. Step 4: Simplify right side
    70,378.37x = 1,877,832,367.85
  5. Step 5: Solve for x
    x = 1,877,832,367.85/70,378.37
  6. Step 6: Final answer
    x = 26,681.95

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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.