Home / 53,820.45-80,730.68-18,751.91

Finding the Fourth Proportional to 53,820.45, 80,730.68 and 18,751.91

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Solution

The fourth proportional to 53,820.45, 80,730.68 and 18,751.91 is: 28,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,820.45 : 80,730.68 = 18,751.91 : x
  2. Step 2: Convert to fraction form
    53,820.45/80,730.68 = 18,751.91/x
  3. Step 3: Cross multiply
    53,820.45x = 80,730.68 × 18,751.91
  4. Step 4: Simplify right side
    53,820.45x = 1,513,853,948.19
  5. Step 5: Solve for x
    x = 1,513,853,948.19/53,820.45
  6. Step 6: Final answer
    x = 28,127.86

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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.