Home / 60,399.12-90,576-20,946.72

Finding the Fourth Proportional to 60,399.12, 90,576 and 20,946.72

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Solution

The fourth proportional to 60,399.12, 90,576 and 20,946.72 is: 31,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,399.12 : 90,576 = 20,946.72 : x
  2. Step 2: Convert to fraction form
    60,399.12/90,576 = 20,946.72/x
  3. Step 3: Cross multiply
    60,399.12x = 90,576 × 20,946.72
  4. Step 4: Simplify right side
    60,399.12x = 1,897,270,110.72
  5. Step 5: Solve for x
    x = 1,897,270,110.72/60,399.12
  6. Step 6: Final answer
    x = 31,412.21

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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.