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Finding the Fourth Proportional to 86,883.32, 119,919.36 and 56,616.32

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Solution

The fourth proportional to 86,883.32, 119,919.36 and 56,616.32 is: 78,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,883.32 : 119,919.36 = 56,616.32 : x
  2. Step 2: Convert to fraction form
    86,883.32/119,919.36 = 56,616.32/x
  3. Step 3: Cross multiply
    86,883.32x = 119,919.36 × 56,616.32
  4. Step 4: Simplify right side
    86,883.32x = 6,789,392,859.96
  5. Step 5: Solve for x
    x = 6,789,392,859.96/86,883.32
  6. Step 6: Final answer
    x = 78,143.80

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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.