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Finding the Fourth Proportional to 56,789.60, 85,216.80 and 21,754.40

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Solution

The fourth proportional to 56,789.60, 85,216.80 and 21,754.40 is: 32,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,789.60 : 85,216.80 = 21,754.40 : x
  2. Step 2: Convert to fraction form
    56,789.60/85,216.80 = 21,754.40/x
  3. Step 3: Cross multiply
    56,789.60x = 85,216.80 × 21,754.40
  4. Step 4: Simplify right side
    56,789.60x = 1,853,840,353.92
  5. Step 5: Solve for x
    x = 1,853,840,353.92/56,789.60
  6. Step 6: Final answer
    x = 32,644.01

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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.