Home / 75,871.98-113,820.30-28,490.73

Finding the Fourth Proportional to 75,871.98, 113,820.30 and 28,490.73

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Solution

The fourth proportional to 75,871.98, 113,820.30 and 28,490.73 is: 42,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,871.98 : 113,820.30 = 28,490.73 : x
  2. Step 2: Convert to fraction form
    75,871.98/113,820.30 = 28,490.73/x
  3. Step 3: Cross multiply
    75,871.98x = 113,820.30 × 28,490.73
  4. Step 4: Simplify right side
    75,871.98x = 3,242,823,435.82
  5. Step 5: Solve for x
    x = 3,242,823,435.82/75,871.98
  6. Step 6: Final answer
    x = 42,740.73

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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.