Home / 70,373.24-105,566.78-20,453.75

Finding the Fourth Proportional to 70,373.24, 105,566.78 and 20,453.75

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Solution

The fourth proportional to 70,373.24, 105,566.78 and 20,453.75 is: 30,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.24 : 105,566.78 = 20,453.75 : x
  2. Step 2: Convert to fraction form
    70,373.24/105,566.78 = 20,453.75/x
  3. Step 3: Cross multiply
    70,373.24x = 105,566.78 × 20,453.75
  4. Step 4: Simplify right side
    70,373.24x = 2,159,236,424.16
  5. Step 5: Solve for x
    x = 2,159,236,424.16/70,373.24
  6. Step 6: Final answer
    x = 30,682.63

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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.