Home / 85,409.48-128,114.46-26,245.06

Finding the Fourth Proportional to 85,409.48, 128,114.46 and 26,245.06

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Solution

The fourth proportional to 85,409.48, 128,114.46 and 26,245.06 is: 39,367.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,409.48 : 128,114.46 = 26,245.06 : x
  2. Step 2: Convert to fraction form
    85,409.48/128,114.46 = 26,245.06/x
  3. Step 3: Cross multiply
    85,409.48x = 128,114.46 × 26,245.06
  4. Step 4: Simplify right side
    85,409.48x = 3,362,371,369.28
  5. Step 5: Solve for x
    x = 3,362,371,369.28/85,409.48
  6. Step 6: Final answer
    x = 39,367.66

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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.