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Finding the Fourth Proportional to 77,871.41, 107,460.30 and 43,879.29

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Solution

The fourth proportional to 77,871.41, 107,460.30 and 43,879.29 is: 60,552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,871.41 : 107,460.30 = 43,879.29 : x
  2. Step 2: Convert to fraction form
    77,871.41/107,460.30 = 43,879.29/x
  3. Step 3: Cross multiply
    77,871.41x = 107,460.30 × 43,879.29
  4. Step 4: Simplify right side
    77,871.41x = 4,715,281,428.76
  5. Step 5: Solve for x
    x = 4,715,281,428.76/77,871.41
  6. Step 6: Final answer
    x = 60,552.15

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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.