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Finding the Fourth Proportional to 70,390.82, 97,142.02 and 40,181.06

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Solution

The fourth proportional to 70,390.82, 97,142.02 and 40,181.06 is: 55,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,390.82 : 97,142.02 = 40,181.06 : x
  2. Step 2: Convert to fraction form
    70,390.82/97,142.02 = 40,181.06/x
  3. Step 3: Cross multiply
    70,390.82x = 97,142.02 × 40,181.06
  4. Step 4: Simplify right side
    70,390.82x = 3,903,269,334.14
  5. Step 5: Solve for x
    x = 3,903,269,334.14/70,390.82
  6. Step 6: Final answer
    x = 55,451.40

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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.