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Finding the Fourth Proportional to 101,294.76, 139,779.60 and 55,972.26

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Solution

The fourth proportional to 101,294.76, 139,779.60 and 55,972.26 is: 77,237.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,294.76 : 139,779.60 = 55,972.26 : x
  2. Step 2: Convert to fraction form
    101,294.76/139,779.60 = 55,972.26/x
  3. Step 3: Cross multiply
    101,294.76x = 139,779.60 × 55,972.26
  4. Step 4: Simplify right side
    101,294.76x = 7,823,780,113.90
  5. Step 5: Solve for x
    x = 7,823,780,113.90/101,294.76
  6. Step 6: Final answer
    x = 77,237.76

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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.