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Finding the Fourth Proportional to 85,499.58, 117,988.75 and 47,261.71

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Solution

The fourth proportional to 85,499.58, 117,988.75 and 47,261.71 is: 65,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,499.58 : 117,988.75 = 47,261.71 : x
  2. Step 2: Convert to fraction form
    85,499.58/117,988.75 = 47,261.71/x
  3. Step 3: Cross multiply
    85,499.58x = 117,988.75 × 47,261.71
  4. Step 4: Simplify right side
    85,499.58x = 5,576,350,292.33
  5. Step 5: Solve for x
    x = 5,576,350,292.33/85,499.58
  6. Step 6: Final answer
    x = 65,220.79

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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.