Home / 78,943.08-108,939.48-43,133.28

Finding the Fourth Proportional to 78,943.08, 108,939.48 and 43,133.28

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Solution

The fourth proportional to 78,943.08, 108,939.48 and 43,133.28 is: 59,522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.08 : 108,939.48 = 43,133.28 : x
  2. Step 2: Convert to fraction form
    78,943.08/108,939.48 = 43,133.28/x
  3. Step 3: Cross multiply
    78,943.08x = 108,939.48 × 43,133.28
  4. Step 4: Simplify right side
    78,943.08x = 4,698,917,093.89
  5. Step 5: Solve for x
    x = 4,698,917,093.89/78,943.08
  6. Step 6: Final answer
    x = 59,522.85

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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.