Home / 85,620.30-128,398.52-29,444.51

Finding the Fourth Proportional to 85,620.30, 128,398.52 and 29,444.51

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Solution

The fourth proportional to 85,620.30, 128,398.52 and 29,444.51 is: 44,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,620.30 : 128,398.52 = 29,444.51 : x
  2. Step 2: Convert to fraction form
    85,620.30/128,398.52 = 29,444.51/x
  3. Step 3: Cross multiply
    85,620.30x = 128,398.52 × 29,444.51
  4. Step 4: Simplify right side
    85,620.30x = 3,780,630,716.91
  5. Step 5: Solve for x
    x = 3,780,630,716.91/85,620.30
  6. Step 6: Final answer
    x = 44,155.78

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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.