Home / 85,450.84-128,176.58-26,286.10

Finding the Fourth Proportional to 85,450.84, 128,176.58 and 26,286.10

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Solution

The fourth proportional to 85,450.84, 128,176.58 and 26,286.10 is: 39,429.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.84 : 128,176.58 = 26,286.10 : x
  2. Step 2: Convert to fraction form
    85,450.84/128,176.58 = 26,286.10/x
  3. Step 3: Cross multiply
    85,450.84x = 128,176.58 × 26,286.10
  4. Step 4: Simplify right side
    85,450.84x = 3,369,262,268.11
  5. Step 5: Solve for x
    x = 3,369,262,268.11/85,450.84
  6. Step 6: Final answer
    x = 39,429.25

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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.