Home / 53,685.78-80,557.62-31,542.40

Finding the Fourth Proportional to 53,685.78, 80,557.62 and 31,542.40

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Solution

The fourth proportional to 53,685.78, 80,557.62 and 31,542.40 is: 47,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,685.78 : 80,557.62 = 31,542.40 : x
  2. Step 2: Convert to fraction form
    53,685.78/80,557.62 = 31,542.40/x
  3. Step 3: Cross multiply
    53,685.78x = 80,557.62 × 31,542.40
  4. Step 4: Simplify right side
    53,685.78x = 2,540,980,673.09
  5. Step 5: Solve for x
    x = 2,540,980,673.09/53,685.78
  6. Step 6: Final answer
    x = 47,330.61

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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.