Home / 72,220.92-99,667.98-40,389.80

Finding the Fourth Proportional to 72,220.92, 99,667.98 and 40,389.80

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Solution

The fourth proportional to 72,220.92, 99,667.98 and 40,389.80 is: 55,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.92 : 99,667.98 = 40,389.80 : x
  2. Step 2: Convert to fraction form
    72,220.92/99,667.98 = 40,389.80/x
  3. Step 3: Cross multiply
    72,220.92x = 99,667.98 × 40,389.80
  4. Step 4: Simplify right side
    72,220.92x = 4,025,569,778.60
  5. Step 5: Solve for x
    x = 4,025,569,778.60/72,220.92
  6. Step 6: Final answer
    x = 55,739.66

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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.