Home / 85,675.16-128,516.34-26,511.96

Finding the Fourth Proportional to 85,675.16, 128,516.34 and 26,511.96

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Solution

The fourth proportional to 85,675.16, 128,516.34 and 26,511.96 is: 39,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,675.16 : 128,516.34 = 26,511.96 : x
  2. Step 2: Convert to fraction form
    85,675.16/128,516.34 = 26,511.96/x
  3. Step 3: Cross multiply
    85,675.16x = 128,516.34 × 26,511.96
  4. Step 4: Simplify right side
    85,675.16x = 3,407,220,065.43
  5. Step 5: Solve for x
    x = 3,407,220,065.43/85,675.16
  6. Step 6: Final answer
    x = 39,769.05

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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.