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Finding the Fourth Proportional to 73,640.40, 110,314.80 and 43,970.10

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Solution

The fourth proportional to 73,640.40, 110,314.80 and 43,970.10 is: 65,868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,640.40 : 110,314.80 = 43,970.10 : x
  2. Step 2: Convert to fraction form
    73,640.40/110,314.80 = 43,970.10/x
  3. Step 3: Cross multiply
    73,640.40x = 110,314.80 × 43,970.10
  4. Step 4: Simplify right side
    73,640.40x = 4,850,552,787.48
  5. Step 5: Solve for x
    x = 4,850,552,787.48/73,640.40
  6. Step 6: Final answer
    x = 65,868.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.