Home / 78,706.12-108,611.26-42,895.36

Finding the Fourth Proportional to 78,706.12, 108,611.26 and 42,895.36

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Solution

The fourth proportional to 78,706.12, 108,611.26 and 42,895.36 is: 59,193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,706.12 : 108,611.26 = 42,895.36 : x
  2. Step 2: Convert to fraction form
    78,706.12/108,611.26 = 42,895.36/x
  3. Step 3: Cross multiply
    78,706.12x = 108,611.26 × 42,895.36
  4. Step 4: Simplify right side
    78,706.12x = 4,658,919,097.75
  5. Step 5: Solve for x
    x = 4,658,919,097.75/78,706.12
  6. Step 6: Final answer
    x = 59,193.86

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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.