Home / 81,898.40-122,650.72-46,731.44

Finding the Fourth Proportional to 81,898.40, 122,650.72 and 46,731.44

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Solution

The fourth proportional to 81,898.40, 122,650.72 and 46,731.44 is: 69,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,898.40 : 122,650.72 = 46,731.44 : x
  2. Step 2: Convert to fraction form
    81,898.40/122,650.72 = 46,731.44/x
  3. Step 3: Cross multiply
    81,898.40x = 122,650.72 × 46,731.44
  4. Step 4: Simplify right side
    81,898.40x = 5,731,644,762.64
  5. Step 5: Solve for x
    x = 5,731,644,762.64/81,898.40
  6. Step 6: Final answer
    x = 69,984.82

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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.