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Finding the Fourth Proportional to 78,850.20, 118,307.70 and 28,954.20

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Solution

The fourth proportional to 78,850.20, 118,307.70 and 28,954.20 is: 43,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.20 : 118,307.70 = 28,954.20 : x
  2. Step 2: Convert to fraction form
    78,850.20/118,307.70 = 28,954.20/x
  3. Step 3: Cross multiply
    78,850.20x = 118,307.70 × 28,954.20
  4. Step 4: Simplify right side
    78,850.20x = 3,425,504,807.34
  5. Step 5: Solve for x
    x = 3,425,504,807.34/78,850.20
  6. Step 6: Final answer
    x = 43,443.20

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1.5x scale

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.