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Finding the Fourth Proportional to 86,718.54, 119,684.28 and 50,928.12

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Solution

The fourth proportional to 86,718.54, 119,684.28 and 50,928.12 is: 70,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,718.54 : 119,684.28 = 50,928.12 : x
  2. Step 2: Convert to fraction form
    86,718.54/119,684.28 = 50,928.12/x
  3. Step 3: Cross multiply
    86,718.54x = 119,684.28 × 50,928.12
  4. Step 4: Simplify right side
    86,718.54x = 6,095,295,373.95
  5. Step 5: Solve for x
    x = 6,095,295,373.95/86,718.54
  6. Step 6: Final answer
    x = 70,288.26

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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.