Home / 74,019.58-111,036.44-20,711.60

Finding the Fourth Proportional to 74,019.58, 111,036.44 and 20,711.60

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Solution

The fourth proportional to 74,019.58, 111,036.44 and 20,711.60 is: 31,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,019.58 : 111,036.44 = 20,711.60 : x
  2. Step 2: Convert to fraction form
    74,019.58/111,036.44 = 20,711.60/x
  3. Step 3: Cross multiply
    74,019.58x = 111,036.44 × 20,711.60
  4. Step 4: Simplify right side
    74,019.58x = 2,299,742,330.70
  5. Step 5: Solve for x
    x = 2,299,742,330.70/74,019.58
  6. Step 6: Final answer
    x = 31,069.38

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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.