Home / 89,749.26-123,875.09-55,783.40

Finding the Fourth Proportional to 89,749.26, 123,875.09 and 55,783.40

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Solution

The fourth proportional to 89,749.26, 123,875.09 and 55,783.40 is: 76,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,749.26 : 123,875.09 = 55,783.40 : x
  2. Step 2: Convert to fraction form
    89,749.26/123,875.09 = 55,783.40/x
  3. Step 3: Cross multiply
    89,749.26x = 123,875.09 × 55,783.40
  4. Step 4: Simplify right side
    89,749.26x = 6,910,173,726.28
  5. Step 5: Solve for x
    x = 6,910,173,726.28/89,749.26
  6. Step 6: Final answer
    x = 76,994.21

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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.