Home / 78,918.68-108,903.61-43,108.18

Finding the Fourth Proportional to 78,918.68, 108,903.61 and 43,108.18

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Solution

The fourth proportional to 78,918.68, 108,903.61 and 43,108.18 is: 59,487.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.68 : 108,903.61 = 43,108.18 : x
  2. Step 2: Convert to fraction form
    78,918.68/108,903.61 = 43,108.18/x
  3. Step 3: Cross multiply
    78,918.68x = 108,903.61 × 43,108.18
  4. Step 4: Simplify right side
    78,918.68x = 4,694,636,422.53
  5. Step 5: Solve for x
    x = 4,694,636,422.53/78,918.68
  6. Step 6: Final answer
    x = 59,487.01

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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.