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Finding the Fourth Proportional to 53,223.71, 79,859.16 and 28,257.73

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Solution

The fourth proportional to 53,223.71, 79,859.16 and 28,257.73 is: 42,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,223.71 : 79,859.16 = 28,257.73 : x
  2. Step 2: Convert to fraction form
    53,223.71/79,859.16 = 28,257.73/x
  3. Step 3: Cross multiply
    53,223.71x = 79,859.16 × 28,257.73
  4. Step 4: Simplify right side
    53,223.71x = 2,256,638,381.66
  5. Step 5: Solve for x
    x = 2,256,638,381.66/53,223.71
  6. Step 6: Final answer
    x = 42,399.12

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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.