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Finding the Fourth Proportional to 53,069.68, 79,617.48 and 21,913.84

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Solution

The fourth proportional to 53,069.68, 79,617.48 and 21,913.84 is: 32,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,069.68 : 79,617.48 = 21,913.84 : x
  2. Step 2: Convert to fraction form
    53,069.68/79,617.48 = 21,913.84/x
  3. Step 3: Cross multiply
    53,069.68x = 79,617.48 × 21,913.84
  4. Step 4: Simplify right side
    53,069.68x = 1,744,724,717.92
  5. Step 5: Solve for x
    x = 1,744,724,717.92/53,069.68
  6. Step 6: Final answer
    x = 32,876.11

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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.