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Finding the Fourth Proportional to 78,305.58, 108,061.43 and 44,310.74

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Solution

The fourth proportional to 78,305.58, 108,061.43 and 44,310.74 is: 61,148.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,305.58 : 108,061.43 = 44,310.74 : x
  2. Step 2: Convert to fraction form
    78,305.58/108,061.43 = 44,310.74/x
  3. Step 3: Cross multiply
    78,305.58x = 108,061.43 × 44,310.74
  4. Step 4: Simplify right side
    78,305.58x = 4,788,281,166.90
  5. Step 5: Solve for x
    x = 4,788,281,166.90/78,305.58
  6. Step 6: Final answer
    x = 61,148.66

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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.