Home / 81,905.61-113,064.62-55,063.69

Finding the Fourth Proportional to 81,905.61, 113,064.62 and 55,063.69

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Solution

The fourth proportional to 81,905.61, 113,064.62 and 55,063.69 is: 76,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.61 : 113,064.62 = 55,063.69 : x
  2. Step 2: Convert to fraction form
    81,905.61/113,064.62 = 55,063.69/x
  3. Step 3: Cross multiply
    81,905.61x = 113,064.62 × 55,063.69
  4. Step 4: Simplify right side
    81,905.61x = 6,225,754,975.49
  5. Step 5: Solve for x
    x = 6,225,754,975.49/81,905.61
  6. Step 6: Final answer
    x = 76,011.34

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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.