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Finding the Fourth Proportional to 84,080.63, 115,965.63 and 53,868.74

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Solution

The fourth proportional to 84,080.63, 115,965.63 and 53,868.74 is: 74,296.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,080.63 : 115,965.63 = 53,868.74 : x
  2. Step 2: Convert to fraction form
    84,080.63/115,965.63 = 53,868.74/x
  3. Step 3: Cross multiply
    84,080.63x = 115,965.63 × 53,868.74
  4. Step 4: Simplify right side
    84,080.63x = 6,246,922,371.41
  5. Step 5: Solve for x
    x = 6,246,922,371.41/84,080.63
  6. Step 6: Final answer
    x = 74,296.81

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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.