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Finding the Fourth Proportional to 70,899.78, 97,843.75 and 39,070.73

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Solution

The fourth proportional to 70,899.78, 97,843.75 and 39,070.73 is: 53,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.78 : 97,843.75 = 39,070.73 : x
  2. Step 2: Convert to fraction form
    70,899.78/97,843.75 = 39,070.73/x
  3. Step 3: Cross multiply
    70,899.78x = 97,843.75 × 39,070.73
  4. Step 4: Simplify right side
    70,899.78x = 3,822,826,738.44
  5. Step 5: Solve for x
    x = 3,822,826,738.44/70,899.78
  6. Step 6: Final answer
    x = 53,918.74

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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.