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Finding the Fourth Proportional to 85,381.25, 117,827.34 and 47,655.50

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Solution

The fourth proportional to 85,381.25, 117,827.34 and 47,655.50 is: 65,765.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,381.25 : 117,827.34 = 47,655.50 : x
  2. Step 2: Convert to fraction form
    85,381.25/117,827.34 = 47,655.50/x
  3. Step 3: Cross multiply
    85,381.25x = 117,827.34 × 47,655.50
  4. Step 4: Simplify right side
    85,381.25x = 5,615,120,801.37
  5. Step 5: Solve for x
    x = 5,615,120,801.37/85,381.25
  6. Step 6: Final answer
    x = 65,765.27

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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.