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Finding the Fourth Proportional to 109,049.80, 163,580.10 and 56,561.80

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Solution

The fourth proportional to 109,049.80, 163,580.10 and 56,561.80 is: 84,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,049.80 : 163,580.10 = 56,561.80 : x
  2. Step 2: Convert to fraction form
    109,049.80/163,580.10 = 56,561.80/x
  3. Step 3: Cross multiply
    109,049.80x = 163,580.10 × 56,561.80
  4. Step 4: Simplify right side
    109,049.80x = 9,252,384,900.18
  5. Step 5: Solve for x
    x = 9,252,384,900.18/109,049.80
  6. Step 6: Final answer
    x = 84,845.50

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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.