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Finding the Fourth Proportional to 81,838.97, 112,928.58 and 46,028.21

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Solution

The fourth proportional to 81,838.97, 112,928.58 and 46,028.21 is: 63,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,838.97 : 112,928.58 = 46,028.21 : x
  2. Step 2: Convert to fraction form
    81,838.97/112,928.58 = 46,028.21/x
  3. Step 3: Cross multiply
    81,838.97x = 112,928.58 × 46,028.21
  4. Step 4: Simplify right side
    81,838.97x = 5,197,900,395.24
  5. Step 5: Solve for x
    x = 5,197,900,395.24/81,838.97
  6. Step 6: Final answer
    x = 63,513.76

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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.