Home / 58,121.92-87,130.32-21,177.28

Finding the Fourth Proportional to 58,121.92, 87,130.32 and 21,177.28

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Solution

The fourth proportional to 58,121.92, 87,130.32 and 21,177.28 is: 31,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,121.92 : 87,130.32 = 21,177.28 : x
  2. Step 2: Convert to fraction form
    58,121.92/87,130.32 = 21,177.28/x
  3. Step 3: Cross multiply
    58,121.92x = 87,130.32 × 21,177.28
  4. Step 4: Simplify right side
    58,121.92x = 1,845,183,183.13
  5. Step 5: Solve for x
    x = 1,845,183,183.13/58,121.92
  6. Step 6: Final answer
    x = 31,746.77

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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.