Home / 70,583.67-105,889.28-20,664.59

Finding the Fourth Proportional to 70,583.67, 105,889.28 and 20,664.59

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Solution

The fourth proportional to 70,583.67, 105,889.28 and 20,664.59 is: 31,000.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,583.67 : 105,889.28 = 20,664.59 : x
  2. Step 2: Convert to fraction form
    70,583.67/105,889.28 = 20,664.59/x
  3. Step 3: Cross multiply
    70,583.67x = 105,889.28 × 20,664.59
  4. Step 4: Simplify right side
    70,583.67x = 2,188,157,923.83
  5. Step 5: Solve for x
    x = 2,188,157,923.83/70,583.67
  6. Step 6: Final answer
    x = 31,000.91

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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.