Home / 78,770.12-108,670.74-50,492.36

Finding the Fourth Proportional to 78,770.12, 108,670.74 and 50,492.36

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Solution

The fourth proportional to 78,770.12, 108,670.74 and 50,492.36 is: 69,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,770.12 : 108,670.74 = 50,492.36 : x
  2. Step 2: Convert to fraction form
    78,770.12/108,670.74 = 50,492.36/x
  3. Step 3: Cross multiply
    78,770.12x = 108,670.74 × 50,492.36
  4. Step 4: Simplify right side
    78,770.12x = 5,487,042,125.55
  5. Step 5: Solve for x
    x = 5,487,042,125.55/78,770.12
  6. Step 6: Final answer
    x = 69,658.93

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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.