Home / 50,111.40-69,138-28,887.72

Finding the Fourth Proportional to 50,111.40, 69,138 and 28,887.72

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Solution

The fourth proportional to 50,111.40, 69,138 and 28,887.72 is: 39,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,111.40 : 69,138 = 28,887.72 : x
  2. Step 2: Convert to fraction form
    50,111.40/69,138 = 28,887.72/x
  3. Step 3: Cross multiply
    50,111.40x = 69,138 × 28,887.72
  4. Step 4: Simplify right side
    50,111.40x = 1,997,239,185.36
  5. Step 5: Solve for x
    x = 1,997,239,185.36/50,111.40
  6. Step 6: Final answer
    x = 39,855.98

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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.