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Finding the Fourth Proportional to 61,153.67, 91,739.00 and 21,701.40

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Solution

The fourth proportional to 61,153.67, 91,739.00 and 21,701.40 is: 32,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,153.67 : 91,739.00 = 21,701.40 : x
  2. Step 2: Convert to fraction form
    61,153.67/91,739.00 = 21,701.40/x
  3. Step 3: Cross multiply
    61,153.67x = 91,739.00 × 21,701.40
  4. Step 4: Simplify right side
    61,153.67x = 1,990,864,788.85
  5. Step 5: Solve for x
    x = 1,990,864,788.85/61,153.67
  6. Step 6: Final answer
    x = 32,555.12

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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.