Home / 85,639.14-118,185.21-47,913.66

Finding the Fourth Proportional to 85,639.14, 118,185.21 and 47,913.66

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Solution

The fourth proportional to 85,639.14, 118,185.21 and 47,913.66 is: 66,122.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.14 : 118,185.21 = 47,913.66 : x
  2. Step 2: Convert to fraction form
    85,639.14/118,185.21 = 47,913.66/x
  3. Step 3: Cross multiply
    85,639.14x = 118,185.21 × 47,913.66
  4. Step 4: Simplify right side
    85,639.14x = 5,662,685,968.97
  5. Step 5: Solve for x
    x = 5,662,685,968.97/85,639.14
  6. Step 6: Final answer
    x = 66,122.64

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1.5x scale

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.