Home / 115,039.36-172,601.70-51,840.28

Finding the Fourth Proportional to 115,039.36, 172,601.70 and 51,840.28

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Solution

The fourth proportional to 115,039.36, 172,601.70 and 51,840.28 is: 77,779.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,039.36 : 172,601.70 = 51,840.28 : x
  2. Step 2: Convert to fraction form
    115,039.36/172,601.70 = 51,840.28/x
  3. Step 3: Cross multiply
    115,039.36x = 172,601.70 × 51,840.28
  4. Step 4: Simplify right side
    115,039.36x = 8,947,720,456.48
  5. Step 5: Solve for x
    x = 8,947,720,456.48/115,039.36
  6. Step 6: Final answer
    x = 77,779.64

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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.