Home / 39,976-55,115.60-32,779.40

Finding the Fourth Proportional to 39,976, 55,115.60 and 32,779.40

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Solution

The fourth proportional to 39,976, 55,115.60 and 32,779.40 is: 45,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,976 : 55,115.60 = 32,779.40 : x
  2. Step 2: Convert to fraction form
    39,976/55,115.60 = 32,779.40/x
  3. Step 3: Cross multiply
    39,976x = 55,115.60 × 32,779.40
  4. Step 4: Simplify right side
    39,976x = 1,806,656,298.64
  5. Step 5: Solve for x
    x = 1,806,656,298.64/39,976
  6. Step 6: Final answer
    x = 45,193.52

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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.