Home / 91,921.48-126,864.42-51,638.32

Finding the Fourth Proportional to 91,921.48, 126,864.42 and 51,638.32

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Solution

The fourth proportional to 91,921.48, 126,864.42 and 51,638.32 is: 71,268.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,921.48 : 126,864.42 = 51,638.32 : x
  2. Step 2: Convert to fraction form
    91,921.48/126,864.42 = 51,638.32/x
  3. Step 3: Cross multiply
    91,921.48x = 126,864.42 × 51,638.32
  4. Step 4: Simplify right side
    91,921.48x = 6,551,065,516.57
  5. Step 5: Solve for x
    x = 6,551,065,516.57/91,921.48
  6. Step 6: Final answer
    x = 71,268.06

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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.