Home / 85,986.32-118,666.44-57,256.72

Finding the Fourth Proportional to 85,986.32, 118,666.44 and 57,256.72

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Solution

The fourth proportional to 85,986.32, 118,666.44 and 57,256.72 is: 79,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,986.32 : 118,666.44 = 57,256.72 : x
  2. Step 2: Convert to fraction form
    85,986.32/118,666.44 = 57,256.72/x
  3. Step 3: Cross multiply
    85,986.32x = 118,666.44 × 57,256.72
  4. Step 4: Simplify right side
    85,986.32x = 6,794,451,128.48
  5. Step 5: Solve for x
    x = 6,794,451,128.48/85,986.32
  6. Step 6: Final answer
    x = 79,017.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.