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Finding the Fourth Proportional to 62,978.45, 94,480.13 and 18,000.23

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Solution

The fourth proportional to 62,978.45, 94,480.13 and 18,000.23 is: 27,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,978.45 : 94,480.13 = 18,000.23 : x
  2. Step 2: Convert to fraction form
    62,978.45/94,480.13 = 18,000.23/x
  3. Step 3: Cross multiply
    62,978.45x = 94,480.13 × 18,000.23
  4. Step 4: Simplify right side
    62,978.45x = 1,700,663,643.03
  5. Step 5: Solve for x
    x = 1,700,663,643.03/62,978.45
  6. Step 6: Final answer
    x = 27,003.90

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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.