Home / 42,401.54-63,603.66-21,330.07

Finding the Fourth Proportional to 42,401.54, 63,603.66 and 21,330.07

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Solution

The fourth proportional to 42,401.54, 63,603.66 and 21,330.07 is: 31,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,401.54 : 63,603.66 = 21,330.07 : x
  2. Step 2: Convert to fraction form
    42,401.54/63,603.66 = 21,330.07/x
  3. Step 3: Cross multiply
    42,401.54x = 63,603.66 × 21,330.07
  4. Step 4: Simplify right side
    42,401.54x = 1,356,670,520.06
  5. Step 5: Solve for x
    x = 1,356,670,520.06/42,401.54
  6. Step 6: Final answer
    x = 31,995.78

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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.