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Finding the Fourth Proportional to 31,492.80, 43,302.60 and 30,180.60

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Solution

The fourth proportional to 31,492.80, 43,302.60 and 30,180.60 is: 41,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,492.80 : 43,302.60 = 30,180.60 : x
  2. Step 2: Convert to fraction form
    31,492.80/43,302.60 = 30,180.60/x
  3. Step 3: Cross multiply
    31,492.80x = 43,302.60 × 30,180.60
  4. Step 4: Simplify right side
    31,492.80x = 1,306,898,449.56
  5. Step 5: Solve for x
    x = 1,306,898,449.56/31,492.80
  6. Step 6: Final answer
    x = 41,498.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.