Home / 75,860.28-113,705.64-28,429.74

Finding the Fourth Proportional to 75,860.28, 113,705.64 and 28,429.74

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Solution

The fourth proportional to 75,860.28, 113,705.64 and 28,429.74 is: 42,612.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,860.28 : 113,705.64 = 28,429.74 : x
  2. Step 2: Convert to fraction form
    75,860.28/113,705.64 = 28,429.74/x
  3. Step 3: Cross multiply
    75,860.28x = 113,705.64 × 28,429.74
  4. Step 4: Simplify right side
    75,860.28x = 3,232,621,781.73
  5. Step 5: Solve for x
    x = 3,232,621,781.73/75,860.28
  6. Step 6: Final answer
    x = 42,612.84

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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.