Home / 71,997.90-99,355.19-40,165.98

Finding the Fourth Proportional to 71,997.90, 99,355.19 and 40,165.98

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Solution

The fourth proportional to 71,997.90, 99,355.19 and 40,165.98 is: 55,427.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,997.90 : 99,355.19 = 40,165.98 : x
  2. Step 2: Convert to fraction form
    71,997.90/99,355.19 = 40,165.98/x
  3. Step 3: Cross multiply
    71,997.90x = 99,355.19 × 40,165.98
  4. Step 4: Simplify right side
    71,997.90x = 3,990,698,373.61
  5. Step 5: Solve for x
    x = 3,990,698,373.61/71,997.90
  6. Step 6: Final answer
    x = 55,427.98

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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.