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Finding the Fourth Proportional to 78,925.68, 108,924.93 and 43,121.07

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Solution

The fourth proportional to 78,925.68, 108,924.93 and 43,121.07 is: 59,511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,925.68 : 108,924.93 = 43,121.07 : x
  2. Step 2: Convert to fraction form
    78,925.68/108,924.93 = 43,121.07/x
  3. Step 3: Cross multiply
    78,925.68x = 108,924.93 × 43,121.07
  4. Step 4: Simplify right side
    78,925.68x = 4,696,959,531.28
  5. Step 5: Solve for x
    x = 4,696,959,531.28/78,925.68
  6. Step 6: Final answer
    x = 59,511.17

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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.