Home / 70,681.32-106,021.44-18,090.72

Finding the Fourth Proportional to 70,681.32, 106,021.44 and 18,090.72

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Solution

The fourth proportional to 70,681.32, 106,021.44 and 18,090.72 is: 27,135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,681.32 : 106,021.44 = 18,090.72 : x
  2. Step 2: Convert to fraction form
    70,681.32/106,021.44 = 18,090.72/x
  3. Step 3: Cross multiply
    70,681.32x = 106,021.44 × 18,090.72
  4. Step 4: Simplify right side
    70,681.32x = 1,918,004,185.04
  5. Step 5: Solve for x
    x = 1,918,004,185.04/70,681.32
  6. Step 6: Final answer
    x = 27,135.94

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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.