Home / 78,928.78-108,881.26-53,436.06

Finding the Fourth Proportional to 78,928.78, 108,881.26 and 53,436.06

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Solution

The fourth proportional to 78,928.78, 108,881.26 and 53,436.06 is: 73,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.78 : 108,881.26 = 53,436.06 : x
  2. Step 2: Convert to fraction form
    78,928.78/108,881.26 = 53,436.06/x
  3. Step 3: Cross multiply
    78,928.78x = 108,881.26 × 53,436.06
  4. Step 4: Simplify right side
    78,928.78x = 5,818,185,542.24
  5. Step 5: Solve for x
    x = 5,818,185,542.24/78,928.78
  6. Step 6: Final answer
    x = 73,714.37

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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.