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Finding the Fourth Proportional to 101,779.32, 140,451.66 and 57,064.44

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Solution

The fourth proportional to 101,779.32, 140,451.66 and 57,064.44 is: 78,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,779.32 : 140,451.66 = 57,064.44 : x
  2. Step 2: Convert to fraction form
    101,779.32/140,451.66 = 57,064.44/x
  3. Step 3: Cross multiply
    101,779.32x = 140,451.66 × 57,064.44
  4. Step 4: Simplify right side
    101,779.32x = 8,014,795,324.97
  5. Step 5: Solve for x
    x = 8,014,795,324.97/101,779.32
  6. Step 6: Final answer
    x = 78,746.80

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1.5x scale

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.