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Finding the Fourth Proportional to 73,167.70, 109,751.56 and 28,770.20

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Solution

The fourth proportional to 73,167.70, 109,751.56 and 28,770.20 is: 43,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,167.70 : 109,751.56 = 28,770.20 : x
  2. Step 2: Convert to fraction form
    73,167.70/109,751.56 = 28,770.20/x
  3. Step 3: Cross multiply
    73,167.70x = 109,751.56 × 28,770.20
  4. Step 4: Simplify right side
    73,167.70x = 3,157,574,331.51
  5. Step 5: Solve for x
    x = 3,157,574,331.51/73,167.70
  6. Step 6: Final answer
    x = 43,155.30

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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.