Home / 85,666.40-128,536.24-35,757.52

Finding the Fourth Proportional to 85,666.40, 128,536.24 and 35,757.52

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Solution

The fourth proportional to 85,666.40, 128,536.24 and 35,757.52 is: 53,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666.40 : 128,536.24 = 35,757.52 : x
  2. Step 2: Convert to fraction form
    85,666.40/128,536.24 = 35,757.52/x
  3. Step 3: Cross multiply
    85,666.40x = 128,536.24 × 35,757.52
  4. Step 4: Simplify right side
    85,666.40x = 4,596,137,172.52
  5. Step 5: Solve for x
    x = 4,596,137,172.52/85,666.40
  6. Step 6: Final answer
    x = 53,651.57

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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.