Home / 98,226.72-135,509.76-66,384

Finding the Fourth Proportional to 98,226.72, 135,509.76 and 66,384

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Solution

The fourth proportional to 98,226.72, 135,509.76 and 66,384 is: 91,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,226.72 : 135,509.76 = 66,384 : x
  2. Step 2: Convert to fraction form
    98,226.72/135,509.76 = 66,384/x
  3. Step 3: Cross multiply
    98,226.72x = 135,509.76 × 66,384
  4. Step 4: Simplify right side
    98,226.72x = 8,995,679,907.84
  5. Step 5: Solve for x
    x = 8,995,679,907.84/98,226.72
  6. Step 6: Final answer
    x = 91,580.78

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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.