Home / 47,078.75-70,618.10-12,018.40

Finding the Fourth Proportional to 47,078.75, 70,618.10 and 12,018.40

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Solution

The fourth proportional to 47,078.75, 70,618.10 and 12,018.40 is: 18,027.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,078.75 : 70,618.10 = 12,018.40 : x
  2. Step 2: Convert to fraction form
    47,078.75/70,618.10 = 12,018.40/x
  3. Step 3: Cross multiply
    47,078.75x = 70,618.10 × 12,018.40
  4. Step 4: Simplify right side
    47,078.75x = 848,716,426.54
  5. Step 5: Solve for x
    x = 848,716,426.54/47,078.75
  6. Step 6: Final answer
    x = 18,027.59

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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.