Home / 81,686.58-112,727.50-45,876.64

Finding the Fourth Proportional to 81,686.58, 112,727.50 and 45,876.64

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Solution

The fourth proportional to 81,686.58, 112,727.50 and 45,876.64 is: 63,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686.58 : 112,727.50 = 45,876.64 : x
  2. Step 2: Convert to fraction form
    81,686.58/112,727.50 = 45,876.64/x
  3. Step 3: Cross multiply
    81,686.58x = 112,727.50 × 45,876.64
  4. Step 4: Simplify right side
    81,686.58x = 5,171,558,935.60
  5. Step 5: Solve for x
    x = 5,171,558,935.60/81,686.58
  6. Step 6: Final answer
    x = 63,309.77

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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.