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Finding the Fourth Proportional to 70,971.36, 106,482.54 and 30,427.92

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Solution

The fourth proportional to 70,971.36, 106,482.54 and 30,427.92 is: 45,652.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,971.36 : 106,482.54 = 30,427.92 : x
  2. Step 2: Convert to fraction form
    70,971.36/106,482.54 = 30,427.92/x
  3. Step 3: Cross multiply
    70,971.36x = 106,482.54 × 30,427.92
  4. Step 4: Simplify right side
    70,971.36x = 3,240,042,208.52
  5. Step 5: Solve for x
    x = 3,240,042,208.52/70,971.36
  6. Step 6: Final answer
    x = 45,652.81

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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.