Home / 85,730.97-128,607.39-26,570.19

Finding the Fourth Proportional to 85,730.97, 128,607.39 and 26,570.19

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Solution

The fourth proportional to 85,730.97, 128,607.39 and 26,570.19 is: 39,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,730.97 : 128,607.39 = 26,570.19 : x
  2. Step 2: Convert to fraction form
    85,730.97/128,607.39 = 26,570.19/x
  3. Step 3: Cross multiply
    85,730.97x = 128,607.39 × 26,570.19
  4. Step 4: Simplify right side
    85,730.97x = 3,417,122,787.70
  5. Step 5: Solve for x
    x = 3,417,122,787.70/85,730.97
  6. Step 6: Final answer
    x = 39,858.67

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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.