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Finding the Fourth Proportional to 73,173.65, 109,747.71 and 20,570.63

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Solution

The fourth proportional to 73,173.65, 109,747.71 and 20,570.63 is: 30,852.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,173.65 : 109,747.71 = 20,570.63 : x
  2. Step 2: Convert to fraction form
    73,173.65/109,747.71 = 20,570.63/x
  3. Step 3: Cross multiply
    73,173.65x = 109,747.71 × 20,570.63
  4. Step 4: Simplify right side
    73,173.65x = 2,257,578,987.02
  5. Step 5: Solve for x
    x = 2,257,578,987.02/73,173.65
  6. Step 6: Final answer
    x = 30,852.35

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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.