Home / 85,020.41-127,503.39-28,081.64

Finding the Fourth Proportional to 85,020.41, 127,503.39 and 28,081.64

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Solution

The fourth proportional to 85,020.41, 127,503.39 and 28,081.64 is: 42,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,020.41 : 127,503.39 = 28,081.64 : x
  2. Step 2: Convert to fraction form
    85,020.41/127,503.39 = 28,081.64/x
  3. Step 3: Cross multiply
    85,020.41x = 127,503.39 × 28,081.64
  4. Step 4: Simplify right side
    85,020.41x = 3,580,504,296.76
  5. Step 5: Solve for x
    x = 3,580,504,296.76/85,020.41
  6. Step 6: Final answer
    x = 42,113.47

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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.