Home / 42,769.60-64,164.85-30,143.98

Finding the Fourth Proportional to 42,769.60, 64,164.85 and 30,143.98

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Solution

The fourth proportional to 42,769.60, 64,164.85 and 30,143.98 is: 45,223.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,769.60 : 64,164.85 = 30,143.98 : x
  2. Step 2: Convert to fraction form
    42,769.60/64,164.85 = 30,143.98/x
  3. Step 3: Cross multiply
    42,769.60x = 64,164.85 × 30,143.98
  4. Step 4: Simplify right side
    42,769.60x = 1,934,183,683.80
  5. Step 5: Solve for x
    x = 1,934,183,683.80/42,769.60
  6. Step 6: Final answer
    x = 45,223.33

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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.