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Finding the Fourth Proportional to 70,018.36, 105,027 and 17,427.49

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Solution

The fourth proportional to 70,018.36, 105,027 and 17,427.49 is: 26,141.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.36 : 105,027 = 17,427.49 : x
  2. Step 2: Convert to fraction form
    70,018.36/105,027 = 17,427.49/x
  3. Step 3: Cross multiply
    70,018.36x = 105,027 × 17,427.49
  4. Step 4: Simplify right side
    70,018.36x = 1,830,356,992.23
  5. Step 5: Solve for x
    x = 1,830,356,992.23/70,018.36
  6. Step 6: Final answer
    x = 26,141.10

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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.