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Finding the Fourth Proportional to 70,930.80, 97,884.15 and 39,099.66

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Solution

The fourth proportional to 70,930.80, 97,884.15 and 39,099.66 is: 53,957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.80 : 97,884.15 = 39,099.66 : x
  2. Step 2: Convert to fraction form
    70,930.80/97,884.15 = 39,099.66/x
  3. Step 3: Cross multiply
    70,930.80x = 97,884.15 × 39,099.66
  4. Step 4: Simplify right side
    70,930.80x = 3,827,236,984.39
  5. Step 5: Solve for x
    x = 3,827,236,984.39/70,930.80
  6. Step 6: Final answer
    x = 53,957.34

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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.