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Finding the Fourth Proportional to 72,694.29, 109,000.41 and 28,270.17

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Solution

The fourth proportional to 72,694.29, 109,000.41 and 28,270.17 is: 42,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,694.29 : 109,000.41 = 28,270.17 : x
  2. Step 2: Convert to fraction form
    72,694.29/109,000.41 = 28,270.17/x
  3. Step 3: Cross multiply
    72,694.29x = 109,000.41 × 28,270.17
  4. Step 4: Simplify right side
    72,694.29x = 3,081,460,120.77
  5. Step 5: Solve for x
    x = 3,081,460,120.77/72,694.29
  6. Step 6: Final answer
    x = 42,389.30

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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.