Home / 45,290.83-67,914.40-18,988.51

Finding the Fourth Proportional to 45,290.83, 67,914.40 and 18,988.51

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Solution

The fourth proportional to 45,290.83, 67,914.40 and 18,988.51 is: 28,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,290.83 : 67,914.40 = 18,988.51 : x
  2. Step 2: Convert to fraction form
    45,290.83/67,914.40 = 18,988.51/x
  3. Step 3: Cross multiply
    45,290.83x = 67,914.40 × 18,988.51
  4. Step 4: Simplify right side
    45,290.83x = 1,289,593,263.54
  5. Step 5: Solve for x
    x = 1,289,593,263.54/45,290.83
  6. Step 6: Final answer
    x = 28,473.61

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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.