Home / 98,644.40-136,121.04-55,621.46

Finding the Fourth Proportional to 98,644.40, 136,121.04 and 55,621.46

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Solution

The fourth proportional to 98,644.40, 136,121.04 and 55,621.46 is: 76,752.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,644.40 : 136,121.04 = 55,621.46 : x
  2. Step 2: Convert to fraction form
    98,644.40/136,121.04 = 55,621.46/x
  3. Step 3: Cross multiply
    98,644.40x = 136,121.04 × 55,621.46
  4. Step 4: Simplify right side
    98,644.40x = 7,571,250,981.52
  5. Step 5: Solve for x
    x = 7,571,250,981.52/98,644.40
  6. Step 6: Final answer
    x = 76,752.97

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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.