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Finding the Fourth Proportional to 76,703.86, 105,851.31 and 44,878.91

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Solution

The fourth proportional to 76,703.86, 105,851.31 and 44,878.91 is: 61,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,703.86 : 105,851.31 = 44,878.91 : x
  2. Step 2: Convert to fraction form
    76,703.86/105,851.31 = 44,878.91/x
  3. Step 3: Cross multiply
    76,703.86x = 105,851.31 × 44,878.91
  4. Step 4: Simplify right side
    76,703.86x = 4,750,491,312.73
  5. Step 5: Solve for x
    x = 4,750,491,312.73/76,703.86
  6. Step 6: Final answer
    x = 61,932.88

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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.