Home / 72,490.16-108,715.44-19,887.14

Finding the Fourth Proportional to 72,490.16, 108,715.44 and 19,887.14

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Solution

The fourth proportional to 72,490.16, 108,715.44 and 19,887.14 is: 29,825.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,490.16 : 108,715.44 = 19,887.14 : x
  2. Step 2: Convert to fraction form
    72,490.16/108,715.44 = 19,887.14/x
  3. Step 3: Cross multiply
    72,490.16x = 108,715.44 × 19,887.14
  4. Step 4: Simplify right side
    72,490.16x = 2,162,039,175.44
  5. Step 5: Solve for x
    x = 2,162,039,175.44/72,490.16
  6. Step 6: Final answer
    x = 29,825.28

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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.