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Finding the Fourth Proportional to 85,355.28, 117,789.62 and 47,114.84

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Solution

The fourth proportional to 85,355.28, 117,789.62 and 47,114.84 is: 65,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.28 : 117,789.62 = 47,114.84 : x
  2. Step 2: Convert to fraction form
    85,355.28/117,789.62 = 47,114.84/x
  3. Step 3: Cross multiply
    85,355.28x = 117,789.62 × 47,114.84
  4. Step 4: Simplify right side
    85,355.28x = 5,549,638,606.03
  5. Step 5: Solve for x
    x = 5,549,638,606.03/85,355.28
  6. Step 6: Final answer
    x = 65,018.11

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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.