Home / 72,745.09-109,117.13-18,709.58

Finding the Fourth Proportional to 72,745.09, 109,117.13 and 18,709.58

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Solution

The fourth proportional to 72,745.09, 109,117.13 and 18,709.58 is: 28,064.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,745.09 : 109,117.13 = 18,709.58 : x
  2. Step 2: Convert to fraction form
    72,745.09/109,117.13 = 18,709.58/x
  3. Step 3: Cross multiply
    72,745.09x = 109,117.13 × 18,709.58
  4. Step 4: Simplify right side
    72,745.09x = 2,041,535,852.35
  5. Step 5: Solve for x
    x = 2,041,535,852.35/72,745.09
  6. Step 6: Final answer
    x = 28,064.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.