Home / 91,405.13-126,153.65-53,672.09

Finding the Fourth Proportional to 91,405.13, 126,153.65 and 53,672.09

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Solution

The fourth proportional to 91,405.13, 126,153.65 and 53,672.09 is: 74,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,405.13 : 126,153.65 = 53,672.09 : x
  2. Step 2: Convert to fraction form
    91,405.13/126,153.65 = 53,672.09/x
  3. Step 3: Cross multiply
    91,405.13x = 126,153.65 × 53,672.09
  4. Step 4: Simplify right side
    91,405.13x = 6,770,929,560.04
  5. Step 5: Solve for x
    x = 6,770,929,560.04/91,405.13
  6. Step 6: Final answer
    x = 74,076.04

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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.