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Finding the Fourth Proportional to 70,984.98, 97,958.79 and 39,153.18

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Solution

The fourth proportional to 70,984.98, 97,958.79 and 39,153.18 is: 54,031.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,984.98 : 97,958.79 = 39,153.18 : x
  2. Step 2: Convert to fraction form
    70,984.98/97,958.79 = 39,153.18/x
  3. Step 3: Cross multiply
    70,984.98x = 97,958.79 × 39,153.18
  4. Step 4: Simplify right side
    70,984.98x = 3,835,398,137.45
  5. Step 5: Solve for x
    x = 3,835,398,137.45/70,984.98
  6. Step 6: Final answer
    x = 54,031.12

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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.