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Finding the Fourth Proportional to 85,530.54, 118,027.36 and 47,287.86

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Solution

The fourth proportional to 85,530.54, 118,027.36 and 47,287.86 is: 65,254.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530.54 : 118,027.36 = 47,287.86 : x
  2. Step 2: Convert to fraction form
    85,530.54/118,027.36 = 47,287.86/x
  3. Step 3: Cross multiply
    85,530.54x = 118,027.36 × 47,287.86
  4. Step 4: Simplify right side
    85,530.54x = 5,581,261,275.85
  5. Step 5: Solve for x
    x = 5,581,261,275.85/85,530.54
  6. Step 6: Final answer
    x = 65,254.60

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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.