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Finding the Fourth Proportional to 85,859.38, 118,382.98 and 55,633.67

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Solution

The fourth proportional to 85,859.38, 118,382.98 and 55,633.67 is: 76,707.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,859.38 : 118,382.98 = 55,633.67 : x
  2. Step 2: Convert to fraction form
    85,859.38/118,382.98 = 55,633.67/x
  3. Step 3: Cross multiply
    85,859.38x = 118,382.98 × 55,633.67
  4. Step 4: Simplify right side
    85,859.38x = 6,586,079,364.77
  5. Step 5: Solve for x
    x = 6,586,079,364.77/85,859.38
  6. Step 6: Final answer
    x = 76,707.74

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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.