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Finding the Fourth Proportional to 70,984.63, 97,958.39 and 39,153.45

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Solution

The fourth proportional to 70,984.63, 97,958.39 and 39,153.45 is: 54,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,984.63 : 97,958.39 = 39,153.45 : x
  2. Step 2: Convert to fraction form
    70,984.63/97,958.39 = 39,153.45/x
  3. Step 3: Cross multiply
    70,984.63x = 97,958.39 × 39,153.45
  4. Step 4: Simplify right side
    70,984.63x = 3,835,408,924.95
  5. Step 5: Solve for x
    x = 3,835,408,924.95/70,984.63
  6. Step 6: Final answer
    x = 54,031.54

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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.