Home / 78,685.38-108,589.41-46,421.22

Finding the Fourth Proportional to 78,685.38, 108,589.41 and 46,421.22

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Solution

The fourth proportional to 78,685.38, 108,589.41 and 46,421.22 is: 64,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,685.38 : 108,589.41 = 46,421.22 : x
  2. Step 2: Convert to fraction form
    78,685.38/108,589.41 = 46,421.22/x
  3. Step 3: Cross multiply
    78,685.38x = 108,589.41 × 46,421.22
  4. Step 4: Simplify right side
    78,685.38x = 5,040,852,891.28
  5. Step 5: Solve for x
    x = 5,040,852,891.28/78,685.38
  6. Step 6: Final answer
    x = 64,063.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.