Home / 85,070.27-127,578.19-28,133.60

Finding the Fourth Proportional to 85,070.27, 127,578.19 and 28,133.60

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Solution

The fourth proportional to 85,070.27, 127,578.19 and 28,133.60 is: 42,191.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.27 : 127,578.19 = 28,133.60 : x
  2. Step 2: Convert to fraction form
    85,070.27/127,578.19 = 28,133.60/x
  3. Step 3: Cross multiply
    85,070.27x = 127,578.19 × 28,133.60
  4. Step 4: Simplify right side
    85,070.27x = 3,589,233,110.71
  5. Step 5: Solve for x
    x = 3,589,233,110.71/85,070.27
  6. Step 6: Final answer
    x = 42,191.39

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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.