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Finding the Fourth Proportional to 70,930.75, 97,885.11 and 39,100.79

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Solution

The fourth proportional to 70,930.75, 97,885.11 and 39,100.79 is: 53,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.75 : 97,885.11 = 39,100.79 : x
  2. Step 2: Convert to fraction form
    70,930.75/97,885.11 = 39,100.79/x
  3. Step 3: Cross multiply
    70,930.75x = 97,885.11 × 39,100.79
  4. Step 4: Simplify right side
    70,930.75x = 3,827,384,445.31
  5. Step 5: Solve for x
    x = 3,827,384,445.31/70,930.75
  6. Step 6: Final answer
    x = 53,959.45

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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.