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Finding the Fourth Proportional to 86,089.74, 128,894.04 and 46,505.04

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Solution

The fourth proportional to 86,089.74, 128,894.04 and 46,505.04 is: 69,627.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,089.74 : 128,894.04 = 46,505.04 : x
  2. Step 2: Convert to fraction form
    86,089.74/128,894.04 = 46,505.04/x
  3. Step 3: Cross multiply
    86,089.74x = 128,894.04 × 46,505.04
  4. Step 4: Simplify right side
    86,089.74x = 5,994,222,485.96
  5. Step 5: Solve for x
    x = 5,994,222,485.96/86,089.74
  6. Step 6: Final answer
    x = 69,627.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.