Home / 85,516.96-128,287.50-26,357.44

Finding the Fourth Proportional to 85,516.96, 128,287.50 and 26,357.44

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Solution

The fourth proportional to 85,516.96, 128,287.50 and 26,357.44 is: 39,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,516.96 : 128,287.50 = 26,357.44 : x
  2. Step 2: Convert to fraction form
    85,516.96/128,287.50 = 26,357.44/x
  3. Step 3: Cross multiply
    85,516.96x = 128,287.50 × 26,357.44
  4. Step 4: Simplify right side
    85,516.96x = 3,381,330,084
  5. Step 5: Solve for x
    x = 3,381,330,084/85,516.96
  6. Step 6: Final answer
    x = 39,539.88

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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.