Home / 45,918.09-68,869.05-12,630.12

Finding the Fourth Proportional to 45,918.09, 68,869.05 and 12,630.12

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Solution

The fourth proportional to 45,918.09, 68,869.05 and 12,630.12 is: 18,942.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,918.09 : 68,869.05 = 12,630.12 : x
  2. Step 2: Convert to fraction form
    45,918.09/68,869.05 = 12,630.12/x
  3. Step 3: Cross multiply
    45,918.09x = 68,869.05 × 12,630.12
  4. Step 4: Simplify right side
    45,918.09x = 869,824,365.79
  5. Step 5: Solve for x
    x = 869,824,365.79/45,918.09
  6. Step 6: Final answer
    x = 18,942.96

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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.