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Finding the Fourth Proportional to 61,087.55, 91,619.02 and 16,718.79

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Solution

The fourth proportional to 61,087.55, 91,619.02 and 16,718.79 is: 25,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,087.55 : 91,619.02 = 16,718.79 : x
  2. Step 2: Convert to fraction form
    61,087.55/91,619.02 = 16,718.79/x
  3. Step 3: Cross multiply
    61,087.55x = 91,619.02 × 16,718.79
  4. Step 4: Simplify right side
    61,087.55x = 1,531,759,051.52
  5. Step 5: Solve for x
    x = 1,531,759,051.52/61,087.55
  6. Step 6: Final answer
    x = 25,074.82

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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.