Home / 81,311.18-112,195.95-47,783.66

Finding the Fourth Proportional to 81,311.18, 112,195.95 and 47,783.66

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Solution

The fourth proportional to 81,311.18, 112,195.95 and 47,783.66 is: 65,933.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,311.18 : 112,195.95 = 47,783.66 : x
  2. Step 2: Convert to fraction form
    81,311.18/112,195.95 = 47,783.66/x
  3. Step 3: Cross multiply
    81,311.18x = 112,195.95 × 47,783.66
  4. Step 4: Simplify right side
    81,311.18x = 5,361,133,128.18
  5. Step 5: Solve for x
    x = 5,361,133,128.18/81,311.18
  6. Step 6: Final answer
    x = 65,933.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.