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Finding the Fourth Proportional to 73,068.96, 109,561.47 and 28,643.70

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Solution

The fourth proportional to 73,068.96, 109,561.47 and 28,643.70 is: 42,949.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,068.96 : 109,561.47 = 28,643.70 : x
  2. Step 2: Convert to fraction form
    73,068.96/109,561.47 = 28,643.70/x
  3. Step 3: Cross multiply
    73,068.96x = 109,561.47 × 28,643.70
  4. Step 4: Simplify right side
    73,068.96x = 3,138,245,878.24
  5. Step 5: Solve for x
    x = 3,138,245,878.24/73,068.96
  6. Step 6: Final answer
    x = 42,949.10

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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.