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Finding the Fourth Proportional to 81,703.68, 112,751.13 and 45,893.71

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Solution

The fourth proportional to 81,703.68, 112,751.13 and 45,893.71 is: 63,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,703.68 : 112,751.13 = 45,893.71 : x
  2. Step 2: Convert to fraction form
    81,703.68/112,751.13 = 45,893.71/x
  3. Step 3: Cross multiply
    81,703.68x = 112,751.13 × 45,893.71
  4. Step 4: Simplify right side
    81,703.68x = 5,174,567,662.39
  5. Step 5: Solve for x
    x = 5,174,567,662.39/81,703.68
  6. Step 6: Final answer
    x = 63,333.35

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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.