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Finding the Fourth Proportional to 81,460.70, 112,415.60 and 49,629.63

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Solution

The fourth proportional to 81,460.70, 112,415.60 and 49,629.63 is: 68,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,460.70 : 112,415.60 = 49,629.63 : x
  2. Step 2: Convert to fraction form
    81,460.70/112,415.60 = 49,629.63/x
  3. Step 3: Cross multiply
    81,460.70x = 112,415.60 × 49,629.63
  4. Step 4: Simplify right side
    81,460.70x = 5,579,144,268.36
  5. Step 5: Solve for x
    x = 5,579,144,268.36/81,460.70
  6. Step 6: Final answer
    x = 68,488.78

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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.