Home / 86,012.47-118,701.20-47,772.21

Finding the Fourth Proportional to 86,012.47, 118,701.20 and 47,772.21

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Solution

The fourth proportional to 86,012.47, 118,701.20 and 47,772.21 is: 65,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,012.47 : 118,701.20 = 47,772.21 : x
  2. Step 2: Convert to fraction form
    86,012.47/118,701.20 = 47,772.21/x
  3. Step 3: Cross multiply
    86,012.47x = 118,701.20 × 47,772.21
  4. Step 4: Simplify right side
    86,012.47x = 5,670,618,653.65
  5. Step 5: Solve for x
    x = 5,670,618,653.65/86,012.47
  6. Step 6: Final answer
    x = 65,927.87

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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.