Home / 86,121.16-118,847.25-49,827.70

Finding the Fourth Proportional to 86,121.16, 118,847.25 and 49,827.70

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Solution

The fourth proportional to 86,121.16, 118,847.25 and 49,827.70 is: 68,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,121.16 : 118,847.25 = 49,827.70 : x
  2. Step 2: Convert to fraction form
    86,121.16/118,847.25 = 49,827.70/x
  3. Step 3: Cross multiply
    86,121.16x = 118,847.25 × 49,827.70
  4. Step 4: Simplify right side
    86,121.16x = 5,921,885,118.83
  5. Step 5: Solve for x
    x = 5,921,885,118.83/86,121.16
  6. Step 6: Final answer
    x = 68,762.25

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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.