Home / 70,415.31-105,623.43-17,824.79

Finding the Fourth Proportional to 70,415.31, 105,623.43 and 17,824.79

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Solution

The fourth proportional to 70,415.31, 105,623.43 and 17,824.79 is: 26,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,415.31 : 105,623.43 = 17,824.79 : x
  2. Step 2: Convert to fraction form
    70,415.31/105,623.43 = 17,824.79/x
  3. Step 3: Cross multiply
    70,415.31x = 105,623.43 × 17,824.79
  4. Step 4: Simplify right side
    70,415.31x = 1,882,715,656.05
  5. Step 5: Solve for x
    x = 1,882,715,656.05/70,415.31
  6. Step 6: Final answer
    x = 26,737.31

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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.