Home / 77,211.30-106,542.60-43,221.66

Finding the Fourth Proportional to 77,211.30, 106,542.60 and 43,221.66

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Solution

The fourth proportional to 77,211.30, 106,542.60 and 43,221.66 is: 59,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,211.30 : 106,542.60 = 43,221.66 : x
  2. Step 2: Convert to fraction form
    77,211.30/106,542.60 = 43,221.66/x
  3. Step 3: Cross multiply
    77,211.30x = 106,542.60 × 43,221.66
  4. Step 4: Simplify right side
    77,211.30x = 4,604,948,032.72
  5. Step 5: Solve for x
    x = 4,604,948,032.72/77,211.30
  6. Step 6: Final answer
    x = 59,640.86

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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.