Home / 78,580.14-108,441.04-42,770.06

Finding the Fourth Proportional to 78,580.14, 108,441.04 and 42,770.06

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Solution

The fourth proportional to 78,580.14, 108,441.04 and 42,770.06 is: 59,022.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,580.14 : 108,441.04 = 42,770.06 : x
  2. Step 2: Convert to fraction form
    78,580.14/108,441.04 = 42,770.06/x
  3. Step 3: Cross multiply
    78,580.14x = 108,441.04 × 42,770.06
  4. Step 4: Simplify right side
    78,580.14x = 4,638,029,787.26
  5. Step 5: Solve for x
    x = 4,638,029,787.26/78,580.14
  6. Step 6: Final answer
    x = 59,022.93

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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.