Home / 78,839.37-118,274.63-28,919.93

Finding the Fourth Proportional to 78,839.37, 118,274.63 and 28,919.93

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Solution

The fourth proportional to 78,839.37, 118,274.63 and 28,919.93 is: 43,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.37 : 118,274.63 = 28,919.93 : x
  2. Step 2: Convert to fraction form
    78,839.37/118,274.63 = 28,919.93/x
  3. Step 3: Cross multiply
    78,839.37x = 118,274.63 × 28,919.93
  4. Step 4: Simplify right side
    78,839.37x = 3,420,493,284.40
  5. Step 5: Solve for x
    x = 3,420,493,284.40/78,839.37
  6. Step 6: Final answer
    x = 43,385.60

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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.