Home / 92,921.40-128,231.69-50,479.97

Finding the Fourth Proportional to 92,921.40, 128,231.69 and 50,479.97

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Solution

The fourth proportional to 92,921.40, 128,231.69 and 50,479.97 is: 69,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,921.40 : 128,231.69 = 50,479.97 : x
  2. Step 2: Convert to fraction form
    92,921.40/128,231.69 = 50,479.97/x
  3. Step 3: Cross multiply
    92,921.40x = 128,231.69 × 50,479.97
  4. Step 4: Simplify right side
    92,921.40x = 6,473,130,970.69
  5. Step 5: Solve for x
    x = 6,473,130,970.69/92,921.40
  6. Step 6: Final answer
    x = 69,662.43

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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.