Home / 72,729.07-100,362.45-40,896.07

Finding the Fourth Proportional to 72,729.07, 100,362.45 and 40,896.07

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Solution

The fourth proportional to 72,729.07, 100,362.45 and 40,896.07 is: 56,434.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.07 : 100,362.45 = 40,896.07 : x
  2. Step 2: Convert to fraction form
    72,729.07/100,362.45 = 40,896.07/x
  3. Step 3: Cross multiply
    72,729.07x = 100,362.45 × 40,896.07
  4. Step 4: Simplify right side
    72,729.07x = 4,104,429,780.57
  5. Step 5: Solve for x
    x = 4,104,429,780.57/72,729.07
  6. Step 6: Final answer
    x = 56,434.51

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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.