Home / 90,936.56-125,498.76-55,128.08

Finding the Fourth Proportional to 90,936.56, 125,498.76 and 55,128.08

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Solution

The fourth proportional to 90,936.56, 125,498.76 and 55,128.08 is: 76,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,936.56 : 125,498.76 = 55,128.08 : x
  2. Step 2: Convert to fraction form
    90,936.56/125,498.76 = 55,128.08/x
  3. Step 3: Cross multiply
    90,936.56x = 125,498.76 × 55,128.08
  4. Step 4: Simplify right side
    90,936.56x = 6,918,505,681.18
  5. Step 5: Solve for x
    x = 6,918,505,681.18/90,936.56
  6. Step 6: Final answer
    x = 76,080.57

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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.