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Finding the Fourth Proportional to 86,422.68, 119,262.78 and 48,709.08

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Solution

The fourth proportional to 86,422.68, 119,262.78 and 48,709.08 is: 67,218.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,422.68 : 119,262.78 = 48,709.08 : x
  2. Step 2: Convert to fraction form
    86,422.68/119,262.78 = 48,709.08/x
  3. Step 3: Cross multiply
    86,422.68x = 119,262.78 × 48,709.08
  4. Step 4: Simplify right side
    86,422.68x = 5,809,180,292.04
  5. Step 5: Solve for x
    x = 5,809,180,292.04/86,422.68
  6. Step 6: Final answer
    x = 67,218.24

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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.