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Finding the Fourth Proportional to 70,891.10, 97,830.87 and 39,059.54

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Solution

The fourth proportional to 70,891.10, 97,830.87 and 39,059.54 is: 53,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.10 : 97,830.87 = 39,059.54 : x
  2. Step 2: Convert to fraction form
    70,891.10/97,830.87 = 39,059.54/x
  3. Step 3: Cross multiply
    70,891.10x = 97,830.87 × 39,059.54
  4. Step 4: Simplify right side
    70,891.10x = 3,821,228,780.00
  5. Step 5: Solve for x
    x = 3,821,228,780.00/70,891.10
  6. Step 6: Final answer
    x = 53,902.80

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1.5x scale

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.