Home / 81,516.39-122,460.93-57,882.21

Finding the Fourth Proportional to 81,516.39, 122,460.93 and 57,882.21

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Solution

The fourth proportional to 81,516.39, 122,460.93 and 57,882.21 is: 86,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,516.39 : 122,460.93 = 57,882.21 : x
  2. Step 2: Convert to fraction form
    81,516.39/122,460.93 = 57,882.21/x
  3. Step 3: Cross multiply
    81,516.39x = 122,460.93 × 57,882.21
  4. Step 4: Simplify right side
    81,516.39x = 7,088,308,807.83
  5. Step 5: Solve for x
    x = 7,088,308,807.83/81,516.39
  6. Step 6: Final answer
    x = 86,955.63

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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.