Home / 72,069.92-99,455.56-40,239.36

Finding the Fourth Proportional to 72,069.92, 99,455.56 and 40,239.36

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Solution

The fourth proportional to 72,069.92, 99,455.56 and 40,239.36 is: 55,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,069.92 : 99,455.56 = 40,239.36 : x
  2. Step 2: Convert to fraction form
    72,069.92/99,455.56 = 40,239.36/x
  3. Step 3: Cross multiply
    72,069.92x = 99,455.56 × 40,239.36
  4. Step 4: Simplify right side
    72,069.92x = 4,002,028,082.84
  5. Step 5: Solve for x
    x = 4,002,028,082.84/72,069.92
  6. Step 6: Final answer
    x = 55,529.80

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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.