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Finding the Fourth Proportional to 57,730.40, 86,725.20 and 55,527.20

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Solution

The fourth proportional to 57,730.40, 86,725.20 and 55,527.20 is: 83,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,730.40 : 86,725.20 = 55,527.20 : x
  2. Step 2: Convert to fraction form
    57,730.40/86,725.20 = 55,527.20/x
  3. Step 3: Cross multiply
    57,730.40x = 86,725.20 × 55,527.20
  4. Step 4: Simplify right side
    57,730.40x = 4,815,607,525.44
  5. Step 5: Solve for x
    x = 4,815,607,525.44/57,730.40
  6. Step 6: Final answer
    x = 83,415.45

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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.