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Finding the Fourth Proportional to 61,199.63, 91,800.05 and 21,758.30

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Solution

The fourth proportional to 61,199.63, 91,800.05 and 21,758.30 is: 32,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,199.63 : 91,800.05 = 21,758.30 : x
  2. Step 2: Convert to fraction form
    61,199.63/91,800.05 = 21,758.30/x
  3. Step 3: Cross multiply
    61,199.63x = 91,800.05 × 21,758.30
  4. Step 4: Simplify right side
    61,199.63x = 1,997,412,460.12
  5. Step 5: Solve for x
    x = 1,997,412,460.12/61,199.63
  6. Step 6: Final answer
    x = 32,637.66

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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.