Home / 45,634.40-68,494.80-28,138.40

Finding the Fourth Proportional to 45,634.40, 68,494.80 and 28,138.40

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Solution

The fourth proportional to 45,634.40, 68,494.80 and 28,138.40 is: 42,234.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,634.40 : 68,494.80 = 28,138.40 : x
  2. Step 2: Convert to fraction form
    45,634.40/68,494.80 = 28,138.40/x
  3. Step 3: Cross multiply
    45,634.40x = 68,494.80 × 28,138.40
  4. Step 4: Simplify right side
    45,634.40x = 1,927,334,080.32
  5. Step 5: Solve for x
    x = 1,927,334,080.32/45,634.40
  6. Step 6: Final answer
    x = 42,234.24

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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.