Home / 45,438.78-62,724.87-30,543.42

Finding the Fourth Proportional to 45,438.78, 62,724.87 and 30,543.42

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Solution

The fourth proportional to 45,438.78, 62,724.87 and 30,543.42 is: 42,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,438.78 : 62,724.87 = 30,543.42 : x
  2. Step 2: Convert to fraction form
    45,438.78/62,724.87 = 30,543.42/x
  3. Step 3: Cross multiply
    45,438.78x = 62,724.87 × 30,543.42
  4. Step 4: Simplify right side
    45,438.78x = 1,915,832,048.86
  5. Step 5: Solve for x
    x = 1,915,832,048.86/45,438.78
  6. Step 6: Final answer
    x = 42,162.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.