Home / 49,791.20-74,686.80-31,359.20

Finding the Fourth Proportional to 49,791.20, 74,686.80 and 31,359.20

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Solution

The fourth proportional to 49,791.20, 74,686.80 and 31,359.20 is: 47,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,791.20 : 74,686.80 = 31,359.20 : x
  2. Step 2: Convert to fraction form
    49,791.20/74,686.80 = 31,359.20/x
  3. Step 3: Cross multiply
    49,791.20x = 74,686.80 × 31,359.20
  4. Step 4: Simplify right side
    49,791.20x = 2,342,118,298.56
  5. Step 5: Solve for x
    x = 2,342,118,298.56/49,791.20
  6. Step 6: Final answer
    x = 47,038.80

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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.