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Finding the Fourth Proportional to 71,054.70, 98,062.19 and 40,857.71

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Solution

The fourth proportional to 71,054.70, 98,062.19 and 40,857.71 is: 56,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.70 : 98,062.19 = 40,857.71 : x
  2. Step 2: Convert to fraction form
    71,054.70/98,062.19 = 40,857.71/x
  3. Step 3: Cross multiply
    71,054.70x = 98,062.19 × 40,857.71
  4. Step 4: Simplify right side
    71,054.70x = 4,006,595,826.39
  5. Step 5: Solve for x
    x = 4,006,595,826.39/71,054.70
  6. Step 6: Final answer
    x = 56,387.48

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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.