Home / 105,711.36-145,881.24-57,967.74

Finding the Fourth Proportional to 105,711.36, 145,881.24 and 57,967.74

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Solution

The fourth proportional to 105,711.36, 145,881.24 and 57,967.74 is: 79,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,711.36 : 145,881.24 = 57,967.74 : x
  2. Step 2: Convert to fraction form
    105,711.36/145,881.24 = 57,967.74/x
  3. Step 3: Cross multiply
    105,711.36x = 145,881.24 × 57,967.74
  4. Step 4: Simplify right side
    105,711.36x = 8,456,405,791.20
  5. Step 5: Solve for x
    x = 8,456,405,791.20/105,711.36
  6. Step 6: Final answer
    x = 79,995.24

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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.