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Finding the Fourth Proportional to 79,143.71, 109,218.29 and 43,333.71

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Solution

The fourth proportional to 79,143.71, 109,218.29 and 43,333.71 is: 59,800.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,143.71 : 109,218.29 = 43,333.71 : x
  2. Step 2: Convert to fraction form
    79,143.71/109,218.29 = 43,333.71/x
  3. Step 3: Cross multiply
    79,143.71x = 109,218.29 × 43,333.71
  4. Step 4: Simplify right side
    79,143.71x = 4,732,833,813.89
  5. Step 5: Solve for x
    x = 4,732,833,813.89/79,143.71
  6. Step 6: Final answer
    x = 59,800.51

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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.