Home / 70,653.04-105,991.10-20,734.76

Finding the Fourth Proportional to 70,653.04, 105,991.10 and 20,734.76

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Solution

The fourth proportional to 70,653.04, 105,991.10 and 20,734.76 is: 31,105.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,653.04 : 105,991.10 = 20,734.76 : x
  2. Step 2: Convert to fraction form
    70,653.04/105,991.10 = 20,734.76/x
  3. Step 3: Cross multiply
    70,653.04x = 105,991.10 × 20,734.76
  4. Step 4: Simplify right side
    70,653.04x = 2,197,700,020.64
  5. Step 5: Solve for x
    x = 2,197,700,020.64/70,653.04
  6. Step 6: Final answer
    x = 31,105.53

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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.