Home / 81,981.60-122,972.43-63,288.93

Finding the Fourth Proportional to 81,981.60, 122,972.43 and 63,288.93

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Solution

The fourth proportional to 81,981.60, 122,972.43 and 63,288.93 is: 94,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,981.60 : 122,972.43 = 63,288.93 : x
  2. Step 2: Convert to fraction form
    81,981.60/122,972.43 = 63,288.93/x
  3. Step 3: Cross multiply
    81,981.60x = 122,972.43 × 63,288.93
  4. Step 4: Simplify right side
    81,981.60x = 7,782,792,582.89
  5. Step 5: Solve for x
    x = 7,782,792,582.89/81,981.60
  6. Step 6: Final answer
    x = 94,933.41

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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.