Home / 56,688.89-85,033.45-21,149.69

Finding the Fourth Proportional to 56,688.89, 85,033.45 and 21,149.69

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Solution

The fourth proportional to 56,688.89, 85,033.45 and 21,149.69 is: 31,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.89 : 85,033.45 = 21,149.69 : x
  2. Step 2: Convert to fraction form
    56,688.89/85,033.45 = 21,149.69/x
  3. Step 3: Cross multiply
    56,688.89x = 85,033.45 × 21,149.69
  4. Step 4: Simplify right side
    56,688.89x = 1,798,430,589.43
  5. Step 5: Solve for x
    x = 1,798,430,589.43/56,688.89
  6. Step 6: Final answer
    x = 31,724.57

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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.