Home / 89,749.51-123,875.43-55,783.65

Finding the Fourth Proportional to 89,749.51, 123,875.43 and 55,783.65

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Solution

The fourth proportional to 89,749.51, 123,875.43 and 55,783.65 is: 76,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,749.51 : 123,875.43 = 55,783.65 : x
  2. Step 2: Convert to fraction form
    89,749.51/123,875.43 = 55,783.65/x
  3. Step 3: Cross multiply
    89,749.51x = 123,875.43 × 55,783.65
  4. Step 4: Simplify right side
    89,749.51x = 6,910,223,630.72
  5. Step 5: Solve for x
    x = 6,910,223,630.72/89,749.51
  6. Step 6: Final answer
    x = 76,994.56

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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.