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Finding the Fourth Proportional to 85,550.72, 118,056.48 and 47,307.86

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Solution

The fourth proportional to 85,550.72, 118,056.48 and 47,307.86 is: 65,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,550.72 : 118,056.48 = 47,307.86 : x
  2. Step 2: Convert to fraction form
    85,550.72/118,056.48 = 47,307.86/x
  3. Step 3: Cross multiply
    85,550.72x = 118,056.48 × 47,307.86
  4. Step 4: Simplify right side
    85,550.72x = 5,584,999,427.93
  5. Step 5: Solve for x
    x = 5,584,999,427.93/85,550.72
  6. Step 6: Final answer
    x = 65,282.90

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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.