Home / 78,704.02-108,611.64-42,894.07

Finding the Fourth Proportional to 78,704.02, 108,611.64 and 42,894.07

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Solution

The fourth proportional to 78,704.02, 108,611.64 and 42,894.07 is: 59,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,704.02 : 108,611.64 = 42,894.07 : x
  2. Step 2: Convert to fraction form
    78,704.02/108,611.64 = 42,894.07/x
  3. Step 3: Cross multiply
    78,704.02x = 108,611.64 × 42,894.07
  4. Step 4: Simplify right side
    78,704.02x = 4,658,795,288.97
  5. Step 5: Solve for x
    x = 4,658,795,288.97/78,704.02
  6. Step 6: Final answer
    x = 59,193.87

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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.