Home / 72,340.13-108,378.97-53,411.64

Finding the Fourth Proportional to 72,340.13, 108,378.97 and 53,411.64

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Solution

The fourth proportional to 72,340.13, 108,378.97 and 53,411.64 is: 80,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,340.13 : 108,378.97 = 53,411.64 : x
  2. Step 2: Convert to fraction form
    72,340.13/108,378.97 = 53,411.64/x
  3. Step 3: Cross multiply
    72,340.13x = 108,378.97 × 53,411.64
  4. Step 4: Simplify right side
    72,340.13x = 5,788,698,529.21
  5. Step 5: Solve for x
    x = 5,788,698,529.21/72,340.13
  6. Step 6: Final answer
    x = 80,020.57

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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.