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Finding the Fourth Proportional to 61,864.90, 85,368.86 and 36,372.30

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Solution

The fourth proportional to 61,864.90, 85,368.86 and 36,372.30 is: 50,191.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,864.90 : 85,368.86 = 36,372.30 : x
  2. Step 2: Convert to fraction form
    61,864.90/85,368.86 = 36,372.30/x
  3. Step 3: Cross multiply
    61,864.90x = 85,368.86 × 36,372.30
  4. Step 4: Simplify right side
    61,864.90x = 3,105,061,786.58
  5. Step 5: Solve for x
    x = 3,105,061,786.58/61,864.90
  6. Step 6: Final answer
    x = 50,191.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.