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Finding the Fourth Proportional to 101,779.82, 140,452.35 and 57,064.94

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Solution

The fourth proportional to 101,779.82, 140,452.35 and 57,064.94 is: 78,747.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,779.82 : 140,452.35 = 57,064.94 : x
  2. Step 2: Convert to fraction form
    101,779.82/140,452.35 = 57,064.94/x
  3. Step 3: Cross multiply
    101,779.82x = 140,452.35 × 57,064.94
  4. Step 4: Simplify right side
    101,779.82x = 8,014,904,925.61
  5. Step 5: Solve for x
    x = 8,014,904,925.61/101,779.82
  6. Step 6: Final answer
    x = 78,747.49

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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.