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Finding the Fourth Proportional to 70,018.05, 105,026.53 and 17,427.18

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Solution

The fourth proportional to 70,018.05, 105,026.53 and 17,427.18 is: 26,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.05 : 105,026.53 = 17,427.18 : x
  2. Step 2: Convert to fraction form
    70,018.05/105,026.53 = 17,427.18/x
  3. Step 3: Cross multiply
    70,018.05x = 105,026.53 × 17,427.18
  4. Step 4: Simplify right side
    70,018.05x = 1,830,316,243.09
  5. Step 5: Solve for x
    x = 1,830,316,243.09/70,018.05
  6. Step 6: Final answer
    x = 26,140.63

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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.