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Finding the Fourth Proportional to 70,588.13, 105,885.07 and 17,998.97

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Solution

The fourth proportional to 70,588.13, 105,885.07 and 17,998.97 is: 26,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,588.13 : 105,885.07 = 17,998.97 : x
  2. Step 2: Convert to fraction form
    70,588.13/105,885.07 = 17,998.97/x
  3. Step 3: Cross multiply
    70,588.13x = 105,885.07 × 17,998.97
  4. Step 4: Simplify right side
    70,588.13x = 1,905,822,418.09
  5. Step 5: Solve for x
    x = 1,905,822,418.09/70,588.13
  6. Step 6: Final answer
    x = 26,999.19

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Double scale
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Similar ratio
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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.