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Finding the Fourth Proportional to 81,855.30, 112,965.26 and 46,047.63

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Solution

The fourth proportional to 81,855.30, 112,965.26 and 46,047.63 is: 63,548.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,855.30 : 112,965.26 = 46,047.63 : x
  2. Step 2: Convert to fraction form
    81,855.30/112,965.26 = 46,047.63/x
  3. Step 3: Cross multiply
    81,855.30x = 112,965.26 × 46,047.63
  4. Step 4: Simplify right side
    81,855.30x = 5,201,782,265.10
  5. Step 5: Solve for x
    x = 5,201,782,265.10/81,855.30
  6. Step 6: Final answer
    x = 63,548.51

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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.