Home / 47,262.35-70,869-13,978.04

Finding the Fourth Proportional to 47,262.35, 70,869 and 13,978.04

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Solution

The fourth proportional to 47,262.35, 70,869 and 13,978.04 is: 20,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,262.35 : 70,869 = 13,978.04 : x
  2. Step 2: Convert to fraction form
    47,262.35/70,869 = 13,978.04/x
  3. Step 3: Cross multiply
    47,262.35x = 70,869 × 13,978.04
  4. Step 4: Simplify right side
    47,262.35x = 990,609,716.76
  5. Step 5: Solve for x
    x = 990,609,716.76/47,262.35
  6. Step 6: Final answer
    x = 20,959.81

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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.