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Finding the Fourth Proportional to 61,089.55, 91,622.02 and 16,720.79

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Solution

The fourth proportional to 61,089.55, 91,622.02 and 16,720.79 is: 25,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,089.55 : 91,622.02 = 16,720.79 : x
  2. Step 2: Convert to fraction form
    61,089.55/91,622.02 = 16,720.79/x
  3. Step 3: Cross multiply
    61,089.55x = 91,622.02 × 16,720.79
  4. Step 4: Simplify right side
    61,089.55x = 1,531,992,555.80
  5. Step 5: Solve for x
    x = 1,531,992,555.80/61,089.55
  6. Step 6: Final answer
    x = 25,077.82

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1.5x scale

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.