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Finding the Fourth Proportional to 83,600.60, 125,400.90 and 31,004.60

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Solution

The fourth proportional to 83,600.60, 125,400.90 and 31,004.60 is: 46,506.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,600.60 : 125,400.90 = 31,004.60 : x
  2. Step 2: Convert to fraction form
    83,600.60/125,400.90 = 31,004.60/x
  3. Step 3: Cross multiply
    83,600.60x = 125,400.90 × 31,004.60
  4. Step 4: Simplify right side
    83,600.60x = 3,888,004,744.14
  5. Step 5: Solve for x
    x = 3,888,004,744.14/83,600.60
  6. Step 6: Final answer
    x = 46,506.90

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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.