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Finding the Fourth Proportional to 55,551.60, 83,521.80 and 54,385.20

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Solution

The fourth proportional to 55,551.60, 83,521.80 and 54,385.20 is: 81,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,551.60 : 83,521.80 = 54,385.20 : x
  2. Step 2: Convert to fraction form
    55,551.60/83,521.80 = 54,385.20/x
  3. Step 3: Cross multiply
    55,551.60x = 83,521.80 × 54,385.20
  4. Step 4: Simplify right side
    55,551.60x = 4,542,349,797.36
  5. Step 5: Solve for x
    x = 4,542,349,797.36/55,551.60
  6. Step 6: Final answer
    x = 81,768.12

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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.