Home / 53,078.08-79,618.20-13,635.40

Finding the Fourth Proportional to 53,078.08, 79,618.20 and 13,635.40

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Solution

The fourth proportional to 53,078.08, 79,618.20 and 13,635.40 is: 20,453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,078.08 : 79,618.20 = 13,635.40 : x
  2. Step 2: Convert to fraction form
    53,078.08/79,618.20 = 13,635.40/x
  3. Step 3: Cross multiply
    53,078.08x = 79,618.20 × 13,635.40
  4. Step 4: Simplify right side
    53,078.08x = 1,085,626,004.28
  5. Step 5: Solve for x
    x = 1,085,626,004.28/53,078.08
  6. Step 6: Final answer
    x = 20,453.38

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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.