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Finding the Fourth Proportional to 81,656.39, 112,682.91 and 45,847.91

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Solution

The fourth proportional to 81,656.39, 112,682.91 and 45,847.91 is: 63,268.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.39 : 112,682.91 = 45,847.91 : x
  2. Step 2: Convert to fraction form
    81,656.39/112,682.91 = 45,847.91/x
  3. Step 3: Cross multiply
    81,656.39x = 112,682.91 × 45,847.91
  4. Step 4: Simplify right side
    81,656.39x = 5,166,276,197.93
  5. Step 5: Solve for x
    x = 5,166,276,197.93/81,656.39
  6. Step 6: Final answer
    x = 63,268.48

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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.