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Finding the Fourth Proportional to 70,600.40, 97,430.81 and 38,770.03

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Solution

The fourth proportional to 70,600.40, 97,430.81 and 38,770.03 is: 53,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,600.40 : 97,430.81 = 38,770.03 : x
  2. Step 2: Convert to fraction form
    70,600.40/97,430.81 = 38,770.03/x
  3. Step 3: Cross multiply
    70,600.40x = 97,430.81 × 38,770.03
  4. Step 4: Simplify right side
    70,600.40x = 3,777,395,426.62
  5. Step 5: Solve for x
    x = 3,777,395,426.62/70,600.40
  6. Step 6: Final answer
    x = 53,503.88

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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.