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Finding the Fourth Proportional to 53,209.48, 79,813.72 and 20,377.48

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Solution

The fourth proportional to 53,209.48, 79,813.72 and 20,377.48 is: 30,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,209.48 : 79,813.72 = 20,377.48 : x
  2. Step 2: Convert to fraction form
    53,209.48/79,813.72 = 20,377.48/x
  3. Step 3: Cross multiply
    53,209.48x = 79,813.72 × 20,377.48
  4. Step 4: Simplify right side
    53,209.48x = 1,626,402,483.03
  5. Step 5: Solve for x
    x = 1,626,402,483.03/53,209.48
  6. Step 6: Final answer
    x = 30,566.03

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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.