Home / 56,121.20-84,115.20-29,812.40

Finding the Fourth Proportional to 56,121.20, 84,115.20 and 29,812.40

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Solution

The fourth proportional to 56,121.20, 84,115.20 and 29,812.40 is: 44,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,121.20 : 84,115.20 = 29,812.40 : x
  2. Step 2: Convert to fraction form
    56,121.20/84,115.20 = 29,812.40/x
  3. Step 3: Cross multiply
    56,121.20x = 84,115.20 × 29,812.40
  4. Step 4: Simplify right side
    56,121.20x = 2,507,675,988.48
  5. Step 5: Solve for x
    x = 2,507,675,988.48/56,121.20
  6. Step 6: Final answer
    x = 44,683.22

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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.