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Finding the Fourth Proportional to 101,788.84, 140,485.44 and 56,481.42

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Solution

The fourth proportional to 101,788.84, 140,485.44 and 56,481.42 is: 77,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,788.84 : 140,485.44 = 56,481.42 : x
  2. Step 2: Convert to fraction form
    101,788.84/140,485.44 = 56,481.42/x
  3. Step 3: Cross multiply
    101,788.84x = 140,485.44 × 56,481.42
  4. Step 4: Simplify right side
    101,788.84x = 7,934,816,825.51
  5. Step 5: Solve for x
    x = 7,934,816,825.51/101,788.84
  6. Step 6: Final answer
    x = 77,953.70

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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.