Home / 72,315.66-108,472.86-19,725.06

Finding the Fourth Proportional to 72,315.66, 108,472.86 and 19,725.06

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Solution

The fourth proportional to 72,315.66, 108,472.86 and 19,725.06 is: 29,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,315.66 : 108,472.86 = 19,725.06 : x
  2. Step 2: Convert to fraction form
    72,315.66/108,472.86 = 19,725.06/x
  3. Step 3: Cross multiply
    72,315.66x = 108,472.86 × 19,725.06
  4. Step 4: Simplify right side
    72,315.66x = 2,139,633,671.87
  5. Step 5: Solve for x
    x = 2,139,633,671.87/72,315.66
  6. Step 6: Final answer
    x = 29,587.42

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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.