Home / 42,769.60-64,152.96-19,379.68

Finding the Fourth Proportional to 42,769.60, 64,152.96 and 19,379.68

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Solution

The fourth proportional to 42,769.60, 64,152.96 and 19,379.68 is: 29,068.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,769.60 : 64,152.96 = 19,379.68 : x
  2. Step 2: Convert to fraction form
    42,769.60/64,152.96 = 19,379.68/x
  3. Step 3: Cross multiply
    42,769.60x = 64,152.96 × 19,379.68
  4. Step 4: Simplify right side
    42,769.60x = 1,243,263,835.85
  5. Step 5: Solve for x
    x = 1,243,263,835.85/42,769.60
  6. Step 6: Final answer
    x = 29,068.87

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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.