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Finding the Fourth Proportional to 101,679.28, 152,555.52 and 61,779.68

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Solution

The fourth proportional to 101,679.28, 152,555.52 and 61,779.68 is: 92,691.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,679.28 : 152,555.52 = 61,779.68 : x
  2. Step 2: Convert to fraction form
    101,679.28/152,555.52 = 61,779.68/x
  3. Step 3: Cross multiply
    101,679.28x = 152,555.52 × 61,779.68
  4. Step 4: Simplify right side
    101,679.28x = 9,424,831,207.83
  5. Step 5: Solve for x
    x = 9,424,831,207.83/101,679.28
  6. Step 6: Final answer
    x = 92,691.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.