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Finding the Fourth Proportional to 63,978.10, 95,987.15 and 18,999.71

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Solution

The fourth proportional to 63,978.10, 95,987.15 and 18,999.71 is: 28,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,978.10 : 95,987.15 = 18,999.71 : x
  2. Step 2: Convert to fraction form
    63,978.10/95,987.15 = 18,999.71/x
  3. Step 3: Cross multiply
    63,978.10x = 95,987.15 × 18,999.71
  4. Step 4: Simplify right side
    63,978.10x = 1,823,728,343.12
  5. Step 5: Solve for x
    x = 1,823,728,343.12/63,978.10
  6. Step 6: Final answer
    x = 28,505.51

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1.5x scale

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.