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Finding the Fourth Proportional to 101,299.25, 139,792.97 and 56,587.25

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Solution

The fourth proportional to 101,299.25, 139,792.97 and 56,587.25 is: 78,090.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,299.25 : 139,792.97 = 56,587.25 : x
  2. Step 2: Convert to fraction form
    101,299.25/139,792.97 = 56,587.25/x
  3. Step 3: Cross multiply
    101,299.25x = 139,792.97 × 56,587.25
  4. Step 4: Simplify right side
    101,299.25x = 7,910,499,741.63
  5. Step 5: Solve for x
    x = 7,910,499,741.63/101,299.25
  6. Step 6: Final answer
    x = 78,090.41

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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.