Home / 115,075.26-172,612.54-51,821.32

Finding the Fourth Proportional to 115,075.26, 172,612.54 and 51,821.32

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Solution

The fourth proportional to 115,075.26, 172,612.54 and 51,821.32 is: 77,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,075.26 : 172,612.54 = 51,821.32 : x
  2. Step 2: Convert to fraction form
    115,075.26/172,612.54 = 51,821.32/x
  3. Step 3: Cross multiply
    115,075.26x = 172,612.54 × 51,821.32
  4. Step 4: Simplify right side
    115,075.26x = 8,945,009,773.99
  5. Step 5: Solve for x
    x = 8,945,009,773.99/115,075.26
  6. Step 6: Final answer
    x = 77,731.83

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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.