Home / 115,015.61-172,566.25-51,816.78

Finding the Fourth Proportional to 115,015.61, 172,566.25 and 51,816.78

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Solution

The fourth proportional to 115,015.61, 172,566.25 and 51,816.78 is: 77,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,015.61 : 172,566.25 = 51,816.78 : x
  2. Step 2: Convert to fraction form
    115,015.61/172,566.25 = 51,816.78/x
  3. Step 3: Cross multiply
    115,015.61x = 172,566.25 × 51,816.78
  4. Step 4: Simplify right side
    115,015.61x = 8,941,827,282.13
  5. Step 5: Solve for x
    x = 8,941,827,282.13/115,015.61
  6. Step 6: Final answer
    x = 77,744.47

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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.