Home / 56,813-78,319.96-39,764.48

Finding the Fourth Proportional to 56,813, 78,319.96 and 39,764.48

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Solution

The fourth proportional to 56,813, 78,319.96 and 39,764.48 is: 54,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,813 : 78,319.96 = 39,764.48 : x
  2. Step 2: Convert to fraction form
    56,813/78,319.96 = 39,764.48/x
  3. Step 3: Cross multiply
    56,813x = 78,319.96 × 39,764.48
  4. Step 4: Simplify right side
    56,813x = 3,114,352,483.02
  5. Step 5: Solve for x
    x = 3,114,352,483.02/56,813
  6. Step 6: Final answer
    x = 54,817.60

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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.