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Finding the Fourth Proportional to 75,262, 112,900.56 and 19,858

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Solution

The fourth proportional to 75,262, 112,900.56 and 19,858 is: 29,788.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,262 : 112,900.56 = 19,858 : x
  2. Step 2: Convert to fraction form
    75,262/112,900.56 = 19,858/x
  3. Step 3: Cross multiply
    75,262x = 112,900.56 × 19,858
  4. Step 4: Simplify right side
    75,262x = 2,241,979,320.48
  5. Step 5: Solve for x
    x = 2,241,979,320.48/75,262
  6. Step 6: Final answer
    x = 29,788.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.