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Finding the Fourth Proportional to 76,915.56, 115,372.80 and 41,393.58

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Solution

The fourth proportional to 76,915.56, 115,372.80 and 41,393.58 is: 62,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,915.56 : 115,372.80 = 41,393.58 : x
  2. Step 2: Convert to fraction form
    76,915.56/115,372.80 = 41,393.58/x
  3. Step 3: Cross multiply
    76,915.56x = 115,372.80 × 41,393.58
  4. Step 4: Simplify right side
    76,915.56x = 4,775,693,814.50
  5. Step 5: Solve for x
    x = 4,775,693,814.50/76,915.56
  6. Step 6: Final answer
    x = 62,090.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.