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Finding the Fourth Proportional to 70,867, 97,796.46 and 39,035.80

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Solution

The fourth proportional to 70,867, 97,796.46 and 39,035.80 is: 53,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,867 : 97,796.46 = 39,035.80 : x
  2. Step 2: Convert to fraction form
    70,867/97,796.46 = 39,035.80/x
  3. Step 3: Cross multiply
    70,867x = 97,796.46 × 39,035.80
  4. Step 4: Simplify right side
    70,867x = 3,817,563,053.27
  5. Step 5: Solve for x
    x = 3,817,563,053.27/70,867
  6. Step 6: Final answer
    x = 53,869.40

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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.