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Finding the Fourth Proportional to 70,899.50, 97,843.37 and 39,070.45

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Solution

The fourth proportional to 70,899.50, 97,843.37 and 39,070.45 is: 53,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.50 : 97,843.37 = 39,070.45 : x
  2. Step 2: Convert to fraction form
    70,899.50/97,843.37 = 39,070.45/x
  3. Step 3: Cross multiply
    70,899.50x = 97,843.37 × 39,070.45
  4. Step 4: Simplify right side
    70,899.50x = 3,822,784,495.42
  5. Step 5: Solve for x
    x = 3,822,784,495.42/70,899.50
  6. Step 6: Final answer
    x = 53,918.36

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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.