Home / 78,929.17-108,921.86-43,121.23

Finding the Fourth Proportional to 78,929.17, 108,921.86 and 43,121.23

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Solution

The fourth proportional to 78,929.17, 108,921.86 and 43,121.23 is: 59,507.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.17 : 108,921.86 = 43,121.23 : x
  2. Step 2: Convert to fraction form
    78,929.17/108,921.86 = 43,121.23/x
  3. Step 3: Cross multiply
    78,929.17x = 108,921.86 × 43,121.23
  4. Step 4: Simplify right side
    78,929.17x = 4,696,844,361.48
  5. Step 5: Solve for x
    x = 4,696,844,361.48/78,929.17
  6. Step 6: Final answer
    x = 59,507.08

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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.