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Finding the Fourth Proportional to 78,385.59, 108,170.64 and 44,393.58

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Solution

The fourth proportional to 78,385.59, 108,170.64 and 44,393.58 is: 61,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385.59 : 108,170.64 = 44,393.58 : x
  2. Step 2: Convert to fraction form
    78,385.59/108,170.64 = 44,393.58/x
  3. Step 3: Cross multiply
    78,385.59x = 108,170.64 × 44,393.58
  4. Step 4: Simplify right side
    78,385.59x = 4,802,081,960.49
  5. Step 5: Solve for x
    x = 4,802,081,960.49/78,385.59
  6. Step 6: Final answer
    x = 61,262.31

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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.