Home / 81,340.79-121,999.18-47,622.38

Finding the Fourth Proportional to 81,340.79, 121,999.18 and 47,622.38

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Solution

The fourth proportional to 81,340.79, 121,999.18 and 47,622.38 is: 71,426.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,340.79 : 121,999.18 = 47,622.38 : x
  2. Step 2: Convert to fraction form
    81,340.79/121,999.18 = 47,622.38/x
  3. Step 3: Cross multiply
    81,340.79x = 121,999.18 × 47,622.38
  4. Step 4: Simplify right side
    81,340.79x = 5,809,891,155.23
  5. Step 5: Solve for x
    x = 5,809,891,155.23/81,340.79
  6. Step 6: Final answer
    x = 71,426.54

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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.