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Finding the Fourth Proportional to 85,910.52, 118,557.54 and 47,670.78

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Solution

The fourth proportional to 85,910.52, 118,557.54 and 47,670.78 is: 65,786.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,910.52 : 118,557.54 = 47,670.78 : x
  2. Step 2: Convert to fraction form
    85,910.52/118,557.54 = 47,670.78/x
  3. Step 3: Cross multiply
    85,910.52x = 118,557.54 × 47,670.78
  4. Step 4: Simplify right side
    85,910.52x = 5,651,730,406.68
  5. Step 5: Solve for x
    x = 5,651,730,406.68/85,910.52
  6. Step 6: Final answer
    x = 65,786.24

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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.