Home / 85,308.12-117,725.45-47,584.80

Finding the Fourth Proportional to 85,308.12, 117,725.45 and 47,584.80

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Solution

The fourth proportional to 85,308.12, 117,725.45 and 47,584.80 is: 65,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.12 : 117,725.45 = 47,584.80 : x
  2. Step 2: Convert to fraction form
    85,308.12/117,725.45 = 47,584.80/x
  3. Step 3: Cross multiply
    85,308.12x = 117,725.45 × 47,584.80
  4. Step 4: Simplify right side
    85,308.12x = 5,601,941,755.24
  5. Step 5: Solve for x
    x = 5,601,941,755.24/85,308.12
  6. Step 6: Final answer
    x = 65,667.16

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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.