Home / 72,234.55-99,678.26-40,397.30

Finding the Fourth Proportional to 72,234.55, 99,678.26 and 40,397.30

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Solution

The fourth proportional to 72,234.55, 99,678.26 and 40,397.30 is: 55,745.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,234.55 : 99,678.26 = 40,397.30 : x
  2. Step 2: Convert to fraction form
    72,234.55/99,678.26 = 40,397.30/x
  3. Step 3: Cross multiply
    72,234.55x = 99,678.26 × 40,397.30
  4. Step 4: Simplify right side
    72,234.55x = 4,026,732,572.70
  5. Step 5: Solve for x
    x = 4,026,732,572.70/72,234.55
  6. Step 6: Final answer
    x = 55,745.24

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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.