Home / 85,872.24-118,509.78-47,644.32

Finding the Fourth Proportional to 85,872.24, 118,509.78 and 47,644.32

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Solution

The fourth proportional to 85,872.24, 118,509.78 and 47,644.32 is: 65,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,872.24 : 118,509.78 = 47,644.32 : x
  2. Step 2: Convert to fraction form
    85,872.24/118,509.78 = 47,644.32/x
  3. Step 3: Cross multiply
    85,872.24x = 118,509.78 × 47,644.32
  4. Step 4: Simplify right side
    85,872.24x = 5,646,317,881.45
  5. Step 5: Solve for x
    x = 5,646,317,881.45/85,872.24
  6. Step 6: Final answer
    x = 65,752.54

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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.