Home / 74,260.40-111,390.60-18,856.40

Finding the Fourth Proportional to 74,260.40, 111,390.60 and 18,856.40

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Solution

The fourth proportional to 74,260.40, 111,390.60 and 18,856.40 is: 28,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,260.40 : 111,390.60 = 18,856.40 : x
  2. Step 2: Convert to fraction form
    74,260.40/111,390.60 = 18,856.40/x
  3. Step 3: Cross multiply
    74,260.40x = 111,390.60 × 18,856.40
  4. Step 4: Simplify right side
    74,260.40x = 2,100,425,709.84
  5. Step 5: Solve for x
    x = 2,100,425,709.84/74,260.40
  6. Step 6: Final answer
    x = 28,284.60

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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.