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Finding the Fourth Proportional to 86,209.65, 118,946.07 and 50,408.46

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Solution

The fourth proportional to 86,209.65, 118,946.07 and 50,408.46 is: 69,550.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.65 : 118,946.07 = 50,408.46 : x
  2. Step 2: Convert to fraction form
    86,209.65/118,946.07 = 50,408.46/x
  3. Step 3: Cross multiply
    86,209.65x = 118,946.07 × 50,408.46
  4. Step 4: Simplify right side
    86,209.65x = 5,995,888,211.75
  5. Step 5: Solve for x
    x = 5,995,888,211.75/86,209.65
  6. Step 6: Final answer
    x = 69,550.08

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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.