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Finding the Fourth Proportional to 85,706.60, 118,235.85 and 55,501.65

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Solution

The fourth proportional to 85,706.60, 118,235.85 and 55,501.65 is: 76,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,706.60 : 118,235.85 = 55,501.65 : x
  2. Step 2: Convert to fraction form
    85,706.60/118,235.85 = 55,501.65/x
  3. Step 3: Cross multiply
    85,706.60x = 118,235.85 × 55,501.65
  4. Step 4: Simplify right side
    85,706.60x = 6,562,284,764.15
  5. Step 5: Solve for x
    x = 6,562,284,764.15/85,706.60
  6. Step 6: Final answer
    x = 76,566.85

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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.