Home / 45,130.43-67,706.58-13,540.43

Finding the Fourth Proportional to 45,130.43, 67,706.58 and 13,540.43

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Solution

The fourth proportional to 45,130.43, 67,706.58 and 13,540.43 is: 20,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,130.43 : 67,706.58 = 13,540.43 : x
  2. Step 2: Convert to fraction form
    45,130.43/67,706.58 = 13,540.43/x
  3. Step 3: Cross multiply
    45,130.43x = 67,706.58 × 13,540.43
  4. Step 4: Simplify right side
    45,130.43x = 916,776,427.07
  5. Step 5: Solve for x
    x = 916,776,427.07/45,130.43
  6. Step 6: Final answer
    x = 20,313.93

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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.