Home / 45,421.09-68,135.04-12,140.42

Finding the Fourth Proportional to 45,421.09, 68,135.04 and 12,140.42

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Solution

The fourth proportional to 45,421.09, 68,135.04 and 12,140.42 is: 18,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,421.09 : 68,135.04 = 12,140.42 : x
  2. Step 2: Convert to fraction form
    45,421.09/68,135.04 = 12,140.42/x
  3. Step 3: Cross multiply
    45,421.09x = 68,135.04 × 12,140.42
  4. Step 4: Simplify right side
    45,421.09x = 827,187,661.64
  5. Step 5: Solve for x
    x = 827,187,661.64/45,421.09
  6. Step 6: Final answer
    x = 18,211.53

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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.