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Finding the Fourth Proportional to 70,681.44, 106,021.08 and 18,090.48

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Solution

The fourth proportional to 70,681.44, 106,021.08 and 18,090.48 is: 27,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,681.44 : 106,021.08 = 18,090.48 : x
  2. Step 2: Convert to fraction form
    70,681.44/106,021.08 = 18,090.48/x
  3. Step 3: Cross multiply
    70,681.44x = 106,021.08 × 18,090.48
  4. Step 4: Simplify right side
    70,681.44x = 1,917,972,227.32
  5. Step 5: Solve for x
    x = 1,917,972,227.32/70,681.44
  6. Step 6: Final answer
    x = 27,135.44

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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.