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Finding the Fourth Proportional to 101,331.84, 139,837.14 and 56,012.88

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Solution

The fourth proportional to 101,331.84, 139,837.14 and 56,012.88 is: 77,297.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,331.84 : 139,837.14 = 56,012.88 : x
  2. Step 2: Convert to fraction form
    101,331.84/139,837.14 = 56,012.88/x
  3. Step 3: Cross multiply
    101,331.84x = 139,837.14 × 56,012.88
  4. Step 4: Simplify right side
    101,331.84x = 7,832,680,942.36
  5. Step 5: Solve for x
    x = 7,832,680,942.36/101,331.84
  6. Step 6: Final answer
    x = 77,297.33

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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.