Home / 78,029.85-107,652.06-51,187.26

Finding the Fourth Proportional to 78,029.85, 107,652.06 and 51,187.26

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Solution

The fourth proportional to 78,029.85, 107,652.06 and 51,187.26 is: 70,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.85 : 107,652.06 = 51,187.26 : x
  2. Step 2: Convert to fraction form
    78,029.85/107,652.06 = 51,187.26/x
  3. Step 3: Cross multiply
    78,029.85x = 107,652.06 × 51,187.26
  4. Step 4: Simplify right side
    78,029.85x = 5,510,413,984.76
  5. Step 5: Solve for x
    x = 5,510,413,984.76/78,029.85
  6. Step 6: Final answer
    x = 70,619.31

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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.