Home / 71,828.92-99,130.80-39,997.81

Finding the Fourth Proportional to 71,828.92, 99,130.80 and 39,997.81

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Solution

The fourth proportional to 71,828.92, 99,130.80 and 39,997.81 is: 55,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,828.92 : 99,130.80 = 39,997.81 : x
  2. Step 2: Convert to fraction form
    71,828.92/99,130.80 = 39,997.81/x
  3. Step 3: Cross multiply
    71,828.92x = 99,130.80 × 39,997.81
  4. Step 4: Simplify right side
    71,828.92x = 3,965,014,903.55
  5. Step 5: Solve for x
    x = 3,965,014,903.55/71,828.92
  6. Step 6: Final answer
    x = 55,200.81

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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.