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Finding the Fourth Proportional to 81,656.10, 112,685.58 and 45,846

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Solution

The fourth proportional to 81,656.10, 112,685.58 and 45,846 is: 63,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.10 : 112,685.58 = 45,846 : x
  2. Step 2: Convert to fraction form
    81,656.10/112,685.58 = 45,846/x
  3. Step 3: Cross multiply
    81,656.10x = 112,685.58 × 45,846
  4. Step 4: Simplify right side
    81,656.10x = 5,166,183,100.68
  5. Step 5: Solve for x
    x = 5,166,183,100.68/81,656.10
  6. Step 6: Final answer
    x = 63,267.57

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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.