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Finding the Fourth Proportional to 81,696.26, 112,741.29 and 45,886.28

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Solution

The fourth proportional to 81,696.26, 112,741.29 and 45,886.28 is: 63,323.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,696.26 : 112,741.29 = 45,886.28 : x
  2. Step 2: Convert to fraction form
    81,696.26/112,741.29 = 45,886.28/x
  3. Step 3: Cross multiply
    81,696.26x = 112,741.29 × 45,886.28
  4. Step 4: Simplify right side
    81,696.26x = 5,173,278,400.50
  5. Step 5: Solve for x
    x = 5,173,278,400.50/81,696.26
  6. Step 6: Final answer
    x = 63,323.32

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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.