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Finding the Fourth Proportional to 85,613.84, 118,152.36 and 47,890.64

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Solution

The fourth proportional to 85,613.84, 118,152.36 and 47,890.64 is: 66,092.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,613.84 : 118,152.36 = 47,890.64 : x
  2. Step 2: Convert to fraction form
    85,613.84/118,152.36 = 47,890.64/x
  3. Step 3: Cross multiply
    85,613.84x = 118,152.36 × 47,890.64
  4. Step 4: Simplify right side
    85,613.84x = 5,658,392,137.91
  5. Step 5: Solve for x
    x = 5,658,392,137.91/85,613.84
  6. Step 6: Final answer
    x = 66,092.03

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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.