Home / 85,605.44-128,411.52-26,435.84

Finding the Fourth Proportional to 85,605.44, 128,411.52 and 26,435.84

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Solution

The fourth proportional to 85,605.44, 128,411.52 and 26,435.84 is: 39,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605.44 : 128,411.52 = 26,435.84 : x
  2. Step 2: Convert to fraction form
    85,605.44/128,411.52 = 26,435.84/x
  3. Step 3: Cross multiply
    85,605.44x = 128,411.52 × 26,435.84
  4. Step 4: Simplify right side
    85,605.44x = 3,394,666,396.88
  5. Step 5: Solve for x
    x = 3,394,666,396.88/85,605.44
  6. Step 6: Final answer
    x = 39,654.80

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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.