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Finding the Fourth Proportional to 73,618.07, 110,415.25 and 21,015.25

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Solution

The fourth proportional to 73,618.07, 110,415.25 and 21,015.25 is: 31,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,618.07 : 110,415.25 = 21,015.25 : x
  2. Step 2: Convert to fraction form
    73,618.07/110,415.25 = 21,015.25/x
  3. Step 3: Cross multiply
    73,618.07x = 110,415.25 × 21,015.25
  4. Step 4: Simplify right side
    73,618.07x = 2,320,403,832.79
  5. Step 5: Solve for x
    x = 2,320,403,832.79/73,618.07
  6. Step 6: Final answer
    x = 31,519.49

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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.