Home / 47,148.36-70,724.52-18,685.20

Finding the Fourth Proportional to 47,148.36, 70,724.52 and 18,685.20

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Solution

The fourth proportional to 47,148.36, 70,724.52 and 18,685.20 is: 28,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,148.36 : 70,724.52 = 18,685.20 : x
  2. Step 2: Convert to fraction form
    47,148.36/70,724.52 = 18,685.20/x
  3. Step 3: Cross multiply
    47,148.36x = 70,724.52 × 18,685.20
  4. Step 4: Simplify right side
    47,148.36x = 1,321,501,801.10
  5. Step 5: Solve for x
    x = 1,321,501,801.10/47,148.36
  6. Step 6: Final answer
    x = 28,028.58

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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.