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Finding the Fourth Proportional to 90,447, 124,816.86 and 50,166.93

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Solution

The fourth proportional to 90,447, 124,816.86 and 50,166.93 is: 69,230.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,447 : 124,816.86 = 50,166.93 : x
  2. Step 2: Convert to fraction form
    90,447/124,816.86 = 50,166.93/x
  3. Step 3: Cross multiply
    90,447x = 124,816.86 × 50,166.93
  4. Step 4: Simplify right side
    90,447x = 6,261,678,678.44
  5. Step 5: Solve for x
    x = 6,261,678,678.44/90,447
  6. Step 6: Final answer
    x = 69,230.36

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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.