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Finding the Fourth Proportional to 61,143.22, 84,414.45 and 39,957.94

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Solution

The fourth proportional to 61,143.22, 84,414.45 and 39,957.94 is: 55,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,143.22 : 84,414.45 = 39,957.94 : x
  2. Step 2: Convert to fraction form
    61,143.22/84,414.45 = 39,957.94/x
  3. Step 3: Cross multiply
    61,143.22x = 84,414.45 × 39,957.94
  4. Step 4: Simplify right side
    61,143.22x = 3,373,027,528.23
  5. Step 5: Solve for x
    x = 3,373,027,528.23/61,143.22
  6. Step 6: Final answer
    x = 55,166.01

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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.