Home / 72,289.10-99,747.05-45,412.57

Finding the Fourth Proportional to 72,289.10, 99,747.05 and 45,412.57

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Solution

The fourth proportional to 72,289.10, 99,747.05 and 45,412.57 is: 62,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,289.10 : 99,747.05 = 45,412.57 : x
  2. Step 2: Convert to fraction form
    72,289.10/99,747.05 = 45,412.57/x
  3. Step 3: Cross multiply
    72,289.10x = 99,747.05 × 45,412.57
  4. Step 4: Simplify right side
    72,289.10x = 4,529,770,015.10
  5. Step 5: Solve for x
    x = 4,529,770,015.10/72,289.10
  6. Step 6: Final answer
    x = 62,661.87

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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.