Home / 72,021.30-99,442.53-43,764.90

Finding the Fourth Proportional to 72,021.30, 99,442.53 and 43,764.90

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Solution

The fourth proportional to 72,021.30, 99,442.53 and 43,764.90 is: 60,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.30 : 99,442.53 = 43,764.90 : x
  2. Step 2: Convert to fraction form
    72,021.30/99,442.53 = 43,764.90/x
  3. Step 3: Cross multiply
    72,021.30x = 99,442.53 × 43,764.90
  4. Step 4: Simplify right side
    72,021.30x = 4,352,092,381.20
  5. Step 5: Solve for x
    x = 4,352,092,381.20/72,021.30
  6. Step 6: Final answer
    x = 60,427.85

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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.