Home / 85,535.05-128,320.80-26,376.70

Finding the Fourth Proportional to 85,535.05, 128,320.80 and 26,376.70

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Solution

The fourth proportional to 85,535.05, 128,320.80 and 26,376.70 is: 39,570.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.05 : 128,320.80 = 26,376.70 : x
  2. Step 2: Convert to fraction form
    85,535.05/128,320.80 = 26,376.70/x
  3. Step 3: Cross multiply
    85,535.05x = 128,320.80 × 26,376.70
  4. Step 4: Simplify right side
    85,535.05x = 3,384,679,245.36
  5. Step 5: Solve for x
    x = 3,384,679,245.36/85,535.05
  6. Step 6: Final answer
    x = 39,570.67

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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.