Home / 45,391.23-68,090.90-12,111.57

Finding the Fourth Proportional to 45,391.23, 68,090.90 and 12,111.57

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Solution

The fourth proportional to 45,391.23, 68,090.90 and 12,111.57 is: 18,168.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,391.23 : 68,090.90 = 12,111.57 : x
  2. Step 2: Convert to fraction form
    45,391.23/68,090.90 = 12,111.57/x
  3. Step 3: Cross multiply
    45,391.23x = 68,090.90 × 12,111.57
  4. Step 4: Simplify right side
    45,391.23x = 824,687,641.16
  5. Step 5: Solve for x
    x = 824,687,641.16/45,391.23
  6. Step 6: Final answer
    x = 18,168.44

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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.