Home / 45,290.38-67,913.72-18,988.06

Finding the Fourth Proportional to 45,290.38, 67,913.72 and 18,988.06

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Solution

The fourth proportional to 45,290.38, 67,913.72 and 18,988.06 is: 28,472.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,290.38 : 67,913.72 = 18,988.06 : x
  2. Step 2: Convert to fraction form
    45,290.38/67,913.72 = 18,988.06/x
  3. Step 3: Cross multiply
    45,290.38x = 67,913.72 × 18,988.06
  4. Step 4: Simplify right side
    45,290.38x = 1,289,549,790.18
  5. Step 5: Solve for x
    x = 1,289,549,790.18/45,290.38
  6. Step 6: Final answer
    x = 28,472.93

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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.