Home / 28,072.60-42,102.70-8,077.66

Finding the Fourth Proportional to 28,072.60, 42,102.70 and 8,077.66

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Solution

The fourth proportional to 28,072.60, 42,102.70 and 8,077.66 is: 12,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.60 : 42,102.70 = 8,077.66 : x
  2. Step 2: Convert to fraction form
    28,072.60/42,102.70 = 8,077.66/x
  3. Step 3: Cross multiply
    28,072.60x = 42,102.70 × 8,077.66
  4. Step 4: Simplify right side
    28,072.60x = 340,091,170.23
  5. Step 5: Solve for x
    x = 340,091,170.23/28,072.60
  6. Step 6: Final answer
    x = 12,114.70

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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.