Home / 70,579.17-105,882.53-20,660.09

Finding the Fourth Proportional to 70,579.17, 105,882.53 and 20,660.09

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Solution

The fourth proportional to 70,579.17, 105,882.53 and 20,660.09 is: 30,994.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,579.17 : 105,882.53 = 20,660.09 : x
  2. Step 2: Convert to fraction form
    70,579.17/105,882.53 = 20,660.09/x
  3. Step 3: Cross multiply
    70,579.17x = 105,882.53 × 20,660.09
  4. Step 4: Simplify right side
    70,579.17x = 2,187,541,966.51
  5. Step 5: Solve for x
    x = 2,187,541,966.51/70,579.17
  6. Step 6: Final answer
    x = 30,994.16

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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.