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Finding the Fourth Proportional to 30,661.88, 45,997.62 and 9,887.48

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Solution

The fourth proportional to 30,661.88, 45,997.62 and 9,887.48 is: 14,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.88 : 45,997.62 = 9,887.48 : x
  2. Step 2: Convert to fraction form
    30,661.88/45,997.62 = 9,887.48/x
  3. Step 3: Cross multiply
    30,661.88x = 45,997.62 × 9,887.48
  4. Step 4: Simplify right side
    30,661.88x = 454,800,547.80
  5. Step 5: Solve for x
    x = 454,800,547.80/30,661.88
  6. Step 6: Final answer
    x = 14,832.77

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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.