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Finding the Fourth Proportional to 85,662.09, 118,212.24 and 47,420.82

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Solution

The fourth proportional to 85,662.09, 118,212.24 and 47,420.82 is: 65,439.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,662.09 : 118,212.24 = 47,420.82 : x
  2. Step 2: Convert to fraction form
    85,662.09/118,212.24 = 47,420.82/x
  3. Step 3: Cross multiply
    85,662.09x = 118,212.24 × 47,420.82
  4. Step 4: Simplify right side
    85,662.09x = 5,605,721,354.84
  5. Step 5: Solve for x
    x = 5,605,721,354.84/85,662.09
  6. Step 6: Final answer
    x = 65,439.93

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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.