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Finding the Fourth Proportional to 85,125.94, 117,477.44 and 47,400.19

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Solution

The fourth proportional to 85,125.94, 117,477.44 and 47,400.19 is: 65,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,125.94 : 117,477.44 = 47,400.19 : x
  2. Step 2: Convert to fraction form
    85,125.94/117,477.44 = 47,400.19/x
  3. Step 3: Cross multiply
    85,125.94x = 117,477.44 × 47,400.19
  4. Step 4: Simplify right side
    85,125.94x = 5,568,452,623.77
  5. Step 5: Solve for x
    x = 5,568,452,623.77/85,125.94
  6. Step 6: Final answer
    x = 65,414.29

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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.