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Finding the Fourth Proportional to 77,881.20, 116,850.60 and 31,167.60

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Solution

The fourth proportional to 77,881.20, 116,850.60 and 31,167.60 is: 46,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,881.20 : 116,850.60 = 31,167.60 : x
  2. Step 2: Convert to fraction form
    77,881.20/116,850.60 = 31,167.60/x
  3. Step 3: Cross multiply
    77,881.20x = 116,850.60 × 31,167.60
  4. Step 4: Simplify right side
    77,881.20x = 3,641,952,760.56
  5. Step 5: Solve for x
    x = 3,641,952,760.56/77,881.20
  6. Step 6: Final answer
    x = 46,762.93

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1.5x scale

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.