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Finding the Fourth Proportional to 85,346.88, 117,778.60 and 47,621.13

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Solution

The fourth proportional to 85,346.88, 117,778.60 and 47,621.13 is: 65,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,346.88 : 117,778.60 = 47,621.13 : x
  2. Step 2: Convert to fraction form
    85,346.88/117,778.60 = 47,621.13/x
  3. Step 3: Cross multiply
    85,346.88x = 117,778.60 × 47,621.13
  4. Step 4: Simplify right side
    85,346.88x = 5,608,750,021.82
  5. Step 5: Solve for x
    x = 5,608,750,021.82/85,346.88
  6. Step 6: Final answer
    x = 65,717.11

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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.