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Finding the Fourth Proportional to 85,778.77, 118,409.44 and 55,590.01

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Solution

The fourth proportional to 85,778.77, 118,409.44 and 55,590.01 is: 76,736.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,778.77 : 118,409.44 = 55,590.01 : x
  2. Step 2: Convert to fraction form
    85,778.77/118,409.44 = 55,590.01/x
  3. Step 3: Cross multiply
    85,778.77x = 118,409.44 × 55,590.01
  4. Step 4: Simplify right side
    85,778.77x = 6,582,381,953.69
  5. Step 5: Solve for x
    x = 6,582,381,953.69/85,778.77
  6. Step 6: Final answer
    x = 76,736.73

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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.