Home / 45,391.60-68,087.40-12,111.78

Finding the Fourth Proportional to 45,391.60, 68,087.40 and 12,111.78

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Solution

The fourth proportional to 45,391.60, 68,087.40 and 12,111.78 is: 18,167.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,391.60 : 68,087.40 = 12,111.78 : x
  2. Step 2: Convert to fraction form
    45,391.60/68,087.40 = 12,111.78/x
  3. Step 3: Cross multiply
    45,391.60x = 68,087.40 × 12,111.78
  4. Step 4: Simplify right side
    45,391.60x = 824,659,749.51
  5. Step 5: Solve for x
    x = 824,659,749.51/45,391.60
  6. Step 6: Final answer
    x = 18,167.68

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1.5x scale

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.