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Finding the Fourth Proportional to 86,409.64, 119,278.74 and 67,552.84

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Solution

The fourth proportional to 86,409.64, 119,278.74 and 67,552.84 is: 93,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,409.64 : 119,278.74 = 67,552.84 : x
  2. Step 2: Convert to fraction form
    86,409.64/119,278.74 = 67,552.84/x
  3. Step 3: Cross multiply
    86,409.64x = 119,278.74 × 67,552.84
  4. Step 4: Simplify right side
    86,409.64x = 8,057,617,638.62
  5. Step 5: Solve for x
    x = 8,057,617,638.62/86,409.64
  6. Step 6: Final answer
    x = 93,249.06

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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.