Home / 90,561.36-124,975.44-54,775.20

Finding the Fourth Proportional to 90,561.36, 124,975.44 and 54,775.20

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Solution

The fourth proportional to 90,561.36, 124,975.44 and 54,775.20 is: 75,590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,561.36 : 124,975.44 = 54,775.20 : x
  2. Step 2: Convert to fraction form
    90,561.36/124,975.44 = 54,775.20/x
  3. Step 3: Cross multiply
    90,561.36x = 124,975.44 × 54,775.20
  4. Step 4: Simplify right side
    90,561.36x = 6,845,554,721.09
  5. Step 5: Solve for x
    x = 6,845,554,721.09/90,561.36
  6. Step 6: Final answer
    x = 75,590.24

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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.