Home / 66,212.43-91,373.51-38,989.70

Finding the Fourth Proportional to 66,212.43, 91,373.51 and 38,989.70

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Solution

The fourth proportional to 66,212.43, 91,373.51 and 38,989.70 is: 53,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.43 : 91,373.51 = 38,989.70 : x
  2. Step 2: Convert to fraction form
    66,212.43/91,373.51 = 38,989.70/x
  3. Step 3: Cross multiply
    66,212.43x = 91,373.51 × 38,989.70
  4. Step 4: Simplify right side
    66,212.43x = 3,562,625,383.45
  5. Step 5: Solve for x
    x = 3,562,625,383.45/66,212.43
  6. Step 6: Final answer
    x = 53,805.99

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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.