Home / 85,736.45-128,557.67-26,555.69

Finding the Fourth Proportional to 85,736.45, 128,557.67 and 26,555.69

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Solution

The fourth proportional to 85,736.45, 128,557.67 and 26,555.69 is: 39,818.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,736.45 : 128,557.67 = 26,555.69 : x
  2. Step 2: Convert to fraction form
    85,736.45/128,557.67 = 26,555.69/x
  3. Step 3: Cross multiply
    85,736.45x = 128,557.67 × 26,555.69
  4. Step 4: Simplify right side
    85,736.45x = 3,413,937,820.26
  5. Step 5: Solve for x
    x = 3,413,937,820.26/85,736.45
  6. Step 6: Final answer
    x = 39,818.98

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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.