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Finding the Fourth Proportional to 78,544.78, 108,383.59 and 44,542.40

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Solution

The fourth proportional to 78,544.78, 108,383.59 and 44,542.40 is: 61,463.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,544.78 : 108,383.59 = 44,542.40 : x
  2. Step 2: Convert to fraction form
    78,544.78/108,383.59 = 44,542.40/x
  3. Step 3: Cross multiply
    78,544.78x = 108,383.59 × 44,542.40
  4. Step 4: Simplify right side
    78,544.78x = 4,827,665,219.22
  5. Step 5: Solve for x
    x = 4,827,665,219.22/78,544.78
  6. Step 6: Final answer
    x = 61,463.86

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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.