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Finding the Fourth Proportional to 70,553.84, 105,821.64 and 17,960.13

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Solution

The fourth proportional to 70,553.84, 105,821.64 and 17,960.13 is: 26,937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,553.84 : 105,821.64 = 17,960.13 : x
  2. Step 2: Convert to fraction form
    70,553.84/105,821.64 = 17,960.13/x
  3. Step 3: Cross multiply
    70,553.84x = 105,821.64 × 17,960.13
  4. Step 4: Simplify right side
    70,553.84x = 1,900,570,411.21
  5. Step 5: Solve for x
    x = 1,900,570,411.21/70,553.84
  6. Step 6: Final answer
    x = 26,937.88

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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.