Home / 91,272.36-125,918.40-55,456.60

Finding the Fourth Proportional to 91,272.36, 125,918.40 and 55,456.60

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Solution

The fourth proportional to 91,272.36, 125,918.40 and 55,456.60 is: 76,507.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,272.36 : 125,918.40 = 55,456.60 : x
  2. Step 2: Convert to fraction form
    91,272.36/125,918.40 = 55,456.60/x
  3. Step 3: Cross multiply
    91,272.36x = 125,918.40 × 55,456.60
  4. Step 4: Simplify right side
    91,272.36x = 6,983,006,341.44
  5. Step 5: Solve for x
    x = 6,983,006,341.44/91,272.36
  6. Step 6: Final answer
    x = 76,507.35

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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.