Home / 78,777.24-118,218.41-40,861.46

Finding the Fourth Proportional to 78,777.24, 118,218.41 and 40,861.46

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Solution

The fourth proportional to 78,777.24, 118,218.41 and 40,861.46 is: 61,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,777.24 : 118,218.41 = 40,861.46 : x
  2. Step 2: Convert to fraction form
    78,777.24/118,218.41 = 40,861.46/x
  3. Step 3: Cross multiply
    78,777.24x = 118,218.41 × 40,861.46
  4. Step 4: Simplify right side
    78,777.24x = 4,830,576,240.39
  5. Step 5: Solve for x
    x = 4,830,576,240.39/78,777.24
  6. Step 6: Final answer
    x = 61,319.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.