Home / 66,421.54-91,660.26-36,205.70

Finding the Fourth Proportional to 66,421.54, 91,660.26 and 36,205.70

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Solution

The fourth proportional to 66,421.54, 91,660.26 and 36,205.70 is: 49,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.54 : 91,660.26 = 36,205.70 : x
  2. Step 2: Convert to fraction form
    66,421.54/91,660.26 = 36,205.70/x
  3. Step 3: Cross multiply
    66,421.54x = 91,660.26 × 36,205.70
  4. Step 4: Simplify right side
    66,421.54x = 3,318,623,875.48
  5. Step 5: Solve for x
    x = 3,318,623,875.48/66,421.54
  6. Step 6: Final answer
    x = 49,963.07

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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.