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Finding the Fourth Proportional to 85,308.88, 117,725.16 and 47,583.76

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Solution

The fourth proportional to 85,308.88, 117,725.16 and 47,583.76 is: 65,664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.88 : 117,725.16 = 47,583.76 : x
  2. Step 2: Convert to fraction form
    85,308.88/117,725.16 = 47,583.76/x
  3. Step 3: Cross multiply
    85,308.88x = 117,725.16 × 47,583.76
  4. Step 4: Simplify right side
    85,308.88x = 5,601,805,759.40
  5. Step 5: Solve for x
    x = 5,601,805,759.40/85,308.88
  6. Step 6: Final answer
    x = 65,664.98

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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.