Home / 85,619.84-118,202.90-51,636.98

Finding the Fourth Proportional to 85,619.84, 118,202.90 and 51,636.98

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Solution

The fourth proportional to 85,619.84, 118,202.90 and 51,636.98 is: 71,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.84 : 118,202.90 = 51,636.98 : x
  2. Step 2: Convert to fraction form
    85,619.84/118,202.90 = 51,636.98/x
  3. Step 3: Cross multiply
    85,619.84x = 118,202.90 × 51,636.98
  4. Step 4: Simplify right side
    85,619.84x = 6,103,640,155.67
  5. Step 5: Solve for x
    x = 6,103,640,155.67/85,619.84
  6. Step 6: Final answer
    x = 71,287.68

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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.