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Finding the Fourth Proportional to 85,486.32, 117,956.67 and 51,486.68

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Solution

The fourth proportional to 85,486.32, 117,956.67 and 51,486.68 is: 71,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,486.32 : 117,956.67 = 51,486.68 : x
  2. Step 2: Convert to fraction form
    85,486.32/117,956.67 = 51,486.68/x
  3. Step 3: Cross multiply
    85,486.32x = 117,956.67 × 51,486.68
  4. Step 4: Simplify right side
    85,486.32x = 6,073,197,322.16
  5. Step 5: Solve for x
    x = 6,073,197,322.16/85,486.32
  6. Step 6: Final answer
    x = 71,042.91

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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.