Home / 71,008.15-97,997.10-40,390.84

Finding the Fourth Proportional to 71,008.15, 97,997.10 and 40,390.84

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Solution

The fourth proportional to 71,008.15, 97,997.10 and 40,390.84 is: 55,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,008.15 : 97,997.10 = 40,390.84 : x
  2. Step 2: Convert to fraction form
    71,008.15/97,997.10 = 40,390.84/x
  3. Step 3: Cross multiply
    71,008.15x = 97,997.10 × 40,390.84
  4. Step 4: Simplify right side
    71,008.15x = 3,958,185,186.56
  5. Step 5: Solve for x
    x = 3,958,185,186.56/71,008.15
  6. Step 6: Final answer
    x = 55,742.69

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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.