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Finding the Fourth Proportional to 72,329.40, 99,747.96 and 49,628.34

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Solution

The fourth proportional to 72,329.40, 99,747.96 and 49,628.34 is: 68,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,329.40 : 99,747.96 = 49,628.34 : x
  2. Step 2: Convert to fraction form
    72,329.40/99,747.96 = 49,628.34/x
  3. Step 3: Cross multiply
    72,329.40x = 99,747.96 × 49,628.34
  4. Step 4: Simplify right side
    72,329.40x = 4,950,325,673.19
  5. Step 5: Solve for x
    x = 4,950,325,673.19/72,329.40
  6. Step 6: Final answer
    x = 68,441.40

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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.