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Finding the Fourth Proportional to 78,318.89, 108,078.89 and 44,333.82

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Solution

The fourth proportional to 78,318.89, 108,078.89 and 44,333.82 is: 61,180.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.89 : 108,078.89 = 44,333.82 : x
  2. Step 2: Convert to fraction form
    78,318.89/108,078.89 = 44,333.82/x
  3. Step 3: Cross multiply
    78,318.89x = 108,078.89 × 44,333.82
  4. Step 4: Simplify right side
    78,318.89x = 4,791,550,165.89
  5. Step 5: Solve for x
    x = 4,791,550,165.89/78,318.89
  6. Step 6: Final answer
    x = 61,180.01

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1.5x scale

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.