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Finding the Fourth Proportional to 56,301.60, 84,399.60 and 21,264.80

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Solution

The fourth proportional to 56,301.60, 84,399.60 and 21,264.80 is: 31,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,301.60 : 84,399.60 = 21,264.80 : x
  2. Step 2: Convert to fraction form
    56,301.60/84,399.60 = 21,264.80/x
  3. Step 3: Cross multiply
    56,301.60x = 84,399.60 × 21,264.80
  4. Step 4: Simplify right side
    56,301.60x = 1,794,740,614.08
  5. Step 5: Solve for x
    x = 1,794,740,614.08/56,301.60
  6. Step 6: Final answer
    x = 31,877.26

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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.