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Finding the Fourth Proportional to 101,427.10, 139,958.62 and 56,097.88

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Solution

The fourth proportional to 101,427.10, 139,958.62 and 56,097.88 is: 77,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,427.10 : 139,958.62 = 56,097.88 : x
  2. Step 2: Convert to fraction form
    101,427.10/139,958.62 = 56,097.88/x
  3. Step 3: Cross multiply
    101,427.10x = 139,958.62 × 56,097.88
  4. Step 4: Simplify right side
    101,427.10x = 7,851,381,869.73
  5. Step 5: Solve for x
    x = 7,851,381,869.73/101,427.10
  6. Step 6: Final answer
    x = 77,409.11

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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.