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Finding the Fourth Proportional to 53,254.61, 79,892.85 and 21,664.59

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Solution

The fourth proportional to 53,254.61, 79,892.85 and 21,664.59 is: 32,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,254.61 : 79,892.85 = 21,664.59 : x
  2. Step 2: Convert to fraction form
    53,254.61/79,892.85 = 21,664.59/x
  3. Step 3: Cross multiply
    53,254.61x = 79,892.85 × 21,664.59
  4. Step 4: Simplify right side
    53,254.61x = 1,730,846,093.08
  5. Step 5: Solve for x
    x = 1,730,846,093.08/53,254.61
  6. Step 6: Final answer
    x = 32,501.34

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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.