Home / 92,879.37-128,172.40-50,438.21

Finding the Fourth Proportional to 92,879.37, 128,172.40 and 50,438.21

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Solution

The fourth proportional to 92,879.37, 128,172.40 and 50,438.21 is: 69,604.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,879.37 : 128,172.40 = 50,438.21 : x
  2. Step 2: Convert to fraction form
    92,879.37/128,172.40 = 50,438.21/x
  3. Step 3: Cross multiply
    92,879.37x = 128,172.40 × 50,438.21
  4. Step 4: Simplify right side
    92,879.37x = 6,464,786,427.40
  5. Step 5: Solve for x
    x = 6,464,786,427.40/92,879.37
  6. Step 6: Final answer
    x = 69,604.12

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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.