Home / 45,109.58-67,628.32-21,405.20

Finding the Fourth Proportional to 45,109.58, 67,628.32 and 21,405.20

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Solution

The fourth proportional to 45,109.58, 67,628.32 and 21,405.20 is: 32,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,109.58 : 67,628.32 = 21,405.20 : x
  2. Step 2: Convert to fraction form
    45,109.58/67,628.32 = 21,405.20/x
  3. Step 3: Cross multiply
    45,109.58x = 67,628.32 × 21,405.20
  4. Step 4: Simplify right side
    45,109.58x = 1,447,597,323.61
  5. Step 5: Solve for x
    x = 1,447,597,323.61/45,109.58
  6. Step 6: Final answer
    x = 32,090.69

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1.5x scale

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.