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Finding the Fourth Proportional to 78,891.45, 108,841.97 and 46,619.24

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Solution

The fourth proportional to 78,891.45, 108,841.97 and 46,619.24 is: 64,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,891.45 : 108,841.97 = 46,619.24 : x
  2. Step 2: Convert to fraction form
    78,891.45/108,841.97 = 46,619.24/x
  3. Step 3: Cross multiply
    78,891.45x = 108,841.97 × 46,619.24
  4. Step 4: Simplify right side
    78,891.45x = 5,074,129,144.20
  5. Step 5: Solve for x
    x = 5,074,129,144.20/78,891.45
  6. Step 6: Final answer
    x = 64,317.86

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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.