Home / 90,918.54-125,472.63-54,631.09

Finding the Fourth Proportional to 90,918.54, 125,472.63 and 54,631.09

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Solution

The fourth proportional to 90,918.54, 125,472.63 and 54,631.09 is: 75,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,918.54 : 125,472.63 = 54,631.09 : x
  2. Step 2: Convert to fraction form
    90,918.54/125,472.63 = 54,631.09/x
  3. Step 3: Cross multiply
    90,918.54x = 125,472.63 × 54,631.09
  4. Step 4: Simplify right side
    90,918.54x = 6,854,706,562.28
  5. Step 5: Solve for x
    x = 6,854,706,562.28/90,918.54
  6. Step 6: Final answer
    x = 75,393.93

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1.5x scale

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.