Home / 85,538.60-128,299.68-26,358.38

Finding the Fourth Proportional to 85,538.60, 128,299.68 and 26,358.38

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Solution

The fourth proportional to 85,538.60, 128,299.68 and 26,358.38 is: 39,535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,538.60 : 128,299.68 = 26,358.38 : x
  2. Step 2: Convert to fraction form
    85,538.60/128,299.68 = 26,358.38/x
  3. Step 3: Cross multiply
    85,538.60x = 128,299.68 × 26,358.38
  4. Step 4: Simplify right side
    85,538.60x = 3,381,771,077.82
  5. Step 5: Solve for x
    x = 3,381,771,077.82/85,538.60
  6. Step 6: Final answer
    x = 39,535.03

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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.