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Finding the Fourth Proportional to 56,999.67, 78,238.16 and 54,563.91

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Solution

The fourth proportional to 56,999.67, 78,238.16 and 54,563.91 is: 74,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.67 : 78,238.16 = 54,563.91 : x
  2. Step 2: Convert to fraction form
    56,999.67/78,238.16 = 54,563.91/x
  3. Step 3: Cross multiply
    56,999.67x = 78,238.16 × 54,563.91
  4. Step 4: Simplify right side
    56,999.67x = 4,268,979,647.99
  5. Step 5: Solve for x
    x = 4,268,979,647.99/56,999.67
  6. Step 6: Final answer
    x = 74,894.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.