Home / 80,901.35-121,256.71-36,476.09

Finding the Fourth Proportional to 80,901.35, 121,256.71 and 36,476.09

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Solution

The fourth proportional to 80,901.35, 121,256.71 and 36,476.09 is: 54,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,901.35 : 121,256.71 = 36,476.09 : x
  2. Step 2: Convert to fraction form
    80,901.35/121,256.71 = 36,476.09/x
  3. Step 3: Cross multiply
    80,901.35x = 121,256.71 × 36,476.09
  4. Step 4: Simplify right side
    80,901.35x = 4,422,970,667.06
  5. Step 5: Solve for x
    x = 4,422,970,667.06/80,901.35
  6. Step 6: Final answer
    x = 54,671.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.