Home / 85,442.85-128,166.30-26,279.06

Finding the Fourth Proportional to 85,442.85, 128,166.30 and 26,279.06

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Solution

The fourth proportional to 85,442.85, 128,166.30 and 26,279.06 is: 39,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,442.85 : 128,166.30 = 26,279.06 : x
  2. Step 2: Convert to fraction form
    85,442.85/128,166.30 = 26,279.06/x
  3. Step 3: Cross multiply
    85,442.85x = 128,166.30 × 26,279.06
  4. Step 4: Simplify right side
    85,442.85x = 3,368,089,246.85
  5. Step 5: Solve for x
    x = 3,368,089,246.85/85,442.85
  6. Step 6: Final answer
    x = 39,419.21

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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.