Home / 57,821.09-86,730.71-31,179.47

Finding the Fourth Proportional to 57,821.09, 86,730.71 and 31,179.47

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Solution

The fourth proportional to 57,821.09, 86,730.71 and 31,179.47 is: 46,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,821.09 : 86,730.71 = 31,179.47 : x
  2. Step 2: Convert to fraction form
    57,821.09/86,730.71 = 31,179.47/x
  3. Step 3: Cross multiply
    57,821.09x = 86,730.71 × 31,179.47
  4. Step 4: Simplify right side
    57,821.09x = 2,704,216,980.97
  5. Step 5: Solve for x
    x = 2,704,216,980.97/57,821.09
  6. Step 6: Final answer
    x = 46,768.70

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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.