Home / 80,942.72-121,331.04-31,010

Finding the Fourth Proportional to 80,942.72, 121,331.04 and 31,010

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Solution

The fourth proportional to 80,942.72, 121,331.04 and 31,010 is: 46,483.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.72 : 121,331.04 = 31,010 : x
  2. Step 2: Convert to fraction form
    80,942.72/121,331.04 = 31,010/x
  3. Step 3: Cross multiply
    80,942.72x = 121,331.04 × 31,010
  4. Step 4: Simplify right side
    80,942.72x = 3,762,475,550.40
  5. Step 5: Solve for x
    x = 3,762,475,550.40/80,942.72
  6. Step 6: Final answer
    x = 46,483.19

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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.