Home / 47,288.44-70,888.74-20,978.68

Finding the Fourth Proportional to 47,288.44, 70,888.74 and 20,978.68

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Solution

The fourth proportional to 47,288.44, 70,888.74 and 20,978.68 is: 31,448.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,288.44 : 70,888.74 = 20,978.68 : x
  2. Step 2: Convert to fraction form
    47,288.44/70,888.74 = 20,978.68/x
  3. Step 3: Cross multiply
    47,288.44x = 70,888.74 × 20,978.68
  4. Step 4: Simplify right side
    47,288.44x = 1,487,152,192.06
  5. Step 5: Solve for x
    x = 1,487,152,192.06/47,288.44
  6. Step 6: Final answer
    x = 31,448.54

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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.