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Finding the Fourth Proportional to 57,807.20, 86,710.80 and 54,745.40

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Solution

The fourth proportional to 57,807.20, 86,710.80 and 54,745.40 is: 82,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,807.20 : 86,710.80 = 54,745.40 : x
  2. Step 2: Convert to fraction form
    57,807.20/86,710.80 = 54,745.40/x
  3. Step 3: Cross multiply
    57,807.20x = 86,710.80 × 54,745.40
  4. Step 4: Simplify right side
    57,807.20x = 4,747,017,430.32
  5. Step 5: Solve for x
    x = 4,747,017,430.32/57,807.20
  6. Step 6: Final answer
    x = 82,118.10

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1.5x scale

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.