Home / 72,027.96-99,404.08-39,768.80

Finding the Fourth Proportional to 72,027.96, 99,404.08 and 39,768.80

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Solution

The fourth proportional to 72,027.96, 99,404.08 and 39,768.80 is: 54,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,027.96 : 99,404.08 = 39,768.80 : x
  2. Step 2: Convert to fraction form
    72,027.96/99,404.08 = 39,768.80/x
  3. Step 3: Cross multiply
    72,027.96x = 99,404.08 × 39,768.80
  4. Step 4: Simplify right side
    72,027.96x = 3,953,180,976.70
  5. Step 5: Solve for x
    x = 3,953,180,976.70/72,027.96
  6. Step 6: Final answer
    x = 54,883.98

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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.