Home / 45,820.81-68,728.71-12,538.47

Finding the Fourth Proportional to 45,820.81, 68,728.71 and 12,538.47

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Solution

The fourth proportional to 45,820.81, 68,728.71 and 12,538.47 is: 18,807.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,820.81 : 68,728.71 = 12,538.47 : x
  2. Step 2: Convert to fraction form
    45,820.81/68,728.71 = 12,538.47/x
  3. Step 3: Cross multiply
    45,820.81x = 68,728.71 × 12,538.47
  4. Step 4: Simplify right side
    45,820.81x = 861,752,868.47
  5. Step 5: Solve for x
    x = 861,752,868.47/45,820.81
  6. Step 6: Final answer
    x = 18,807.02

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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.