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Finding the Fourth Proportional to 71,843.36, 99,143.81 and 41,646.21

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Solution

The fourth proportional to 71,843.36, 99,143.81 and 41,646.21 is: 57,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,843.36 : 99,143.81 = 41,646.21 : x
  2. Step 2: Convert to fraction form
    71,843.36/99,143.81 = 41,646.21/x
  3. Step 3: Cross multiply
    71,843.36x = 99,143.81 × 41,646.21
  4. Step 4: Simplify right side
    71,843.36x = 4,128,963,931.46
  5. Step 5: Solve for x
    x = 4,128,963,931.46/71,843.36
  6. Step 6: Final answer
    x = 57,471.75

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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.