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Finding the Fourth Proportional to 86,189.94, 118,946.70 and 50,400.90

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Solution

The fourth proportional to 86,189.94, 118,946.70 and 50,400.90 is: 69,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,189.94 : 118,946.70 = 50,400.90 : x
  2. Step 2: Convert to fraction form
    86,189.94/118,946.70 = 50,400.90/x
  3. Step 3: Cross multiply
    86,189.94x = 118,946.70 × 50,400.90
  4. Step 4: Simplify right side
    86,189.94x = 5,995,020,732.03
  5. Step 5: Solve for x
    x = 5,995,020,732.03/86,189.94
  6. Step 6: Final answer
    x = 69,555.92

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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.