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Finding the Fourth Proportional to 70,378.42, 97,131.87 and 43,170.76

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Solution

The fourth proportional to 70,378.42, 97,131.87 and 43,170.76 is: 59,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,378.42 : 97,131.87 = 43,170.76 : x
  2. Step 2: Convert to fraction form
    70,378.42/97,131.87 = 43,170.76/x
  3. Step 3: Cross multiply
    70,378.42x = 97,131.87 × 43,170.76
  4. Step 4: Simplify right side
    70,378.42x = 4,193,256,648.12
  5. Step 5: Solve for x
    x = 4,193,256,648.12/70,378.42
  6. Step 6: Final answer
    x = 59,581.57

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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.