Home / 86,211.81-118,972.38-47,974.86

Finding the Fourth Proportional to 86,211.81, 118,972.38 and 47,974.86

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Solution

The fourth proportional to 86,211.81, 118,972.38 and 47,974.86 is: 66,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,211.81 : 118,972.38 = 47,974.86 : x
  2. Step 2: Convert to fraction form
    86,211.81/118,972.38 = 47,974.86/x
  3. Step 3: Cross multiply
    86,211.81x = 118,972.38 × 47,974.86
  4. Step 4: Simplify right side
    86,211.81x = 5,707,683,274.37
  5. Step 5: Solve for x
    x = 5,707,683,274.37/86,211.81
  6. Step 6: Final answer
    x = 66,205.35

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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.