Home / 68,274.12-102,423.46-20,888.32

Finding the Fourth Proportional to 68,274.12, 102,423.46 and 20,888.32

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Solution

The fourth proportional to 68,274.12, 102,423.46 and 20,888.32 is: 31,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,274.12 : 102,423.46 = 20,888.32 : x
  2. Step 2: Convert to fraction form
    68,274.12/102,423.46 = 20,888.32/x
  3. Step 3: Cross multiply
    68,274.12x = 102,423.46 × 20,888.32
  4. Step 4: Simplify right side
    68,274.12x = 2,139,453,845.63
  5. Step 5: Solve for x
    x = 2,139,453,845.63/68,274.12
  6. Step 6: Final answer
    x = 31,336.24

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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.