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Finding the Fourth Proportional to 61,145.55, 91,718.33 and 16,772.63

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Solution

The fourth proportional to 61,145.55, 91,718.33 and 16,772.63 is: 25,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,145.55 : 91,718.33 = 16,772.63 : x
  2. Step 2: Convert to fraction form
    61,145.55/91,718.33 = 16,772.63/x
  3. Step 3: Cross multiply
    61,145.55x = 91,718.33 × 16,772.63
  4. Step 4: Simplify right side
    61,145.55x = 1,538,357,070.85
  5. Step 5: Solve for x
    x = 1,538,357,070.85/61,145.55
  6. Step 6: Final answer
    x = 25,158.94

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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.