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Finding the Fourth Proportional to 53,093.80, 79,639.99 and 21,503.61

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Solution

The fourth proportional to 53,093.80, 79,639.99 and 21,503.61 is: 32,255.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,093.80 : 79,639.99 = 21,503.61 : x
  2. Step 2: Convert to fraction form
    53,093.80/79,639.99 = 21,503.61/x
  3. Step 3: Cross multiply
    53,093.80x = 79,639.99 × 21,503.61
  4. Step 4: Simplify right side
    53,093.80x = 1,712,547,352.56
  5. Step 5: Solve for x
    x = 1,712,547,352.56/53,093.80
  6. Step 6: Final answer
    x = 32,255.13

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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.