Home / 86,143.85-118,883.65-47,903.70

Finding the Fourth Proportional to 86,143.85, 118,883.65 and 47,903.70

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Solution

The fourth proportional to 86,143.85, 118,883.65 and 47,903.70 is: 66,109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.85 : 118,883.65 = 47,903.70 : x
  2. Step 2: Convert to fraction form
    86,143.85/118,883.65 = 47,903.70/x
  3. Step 3: Cross multiply
    86,143.85x = 118,883.65 × 47,903.70
  4. Step 4: Simplify right side
    86,143.85x = 5,694,967,120.38
  5. Step 5: Solve for x
    x = 5,694,967,120.38/86,143.85
  6. Step 6: Final answer
    x = 66,109.96

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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.