Home / 58,057.16-87,124.60-21,121.16

Finding the Fourth Proportional to 58,057.16, 87,124.60 and 21,121.16

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Solution

The fourth proportional to 58,057.16, 87,124.60 and 21,121.16 is: 31,695.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,057.16 : 87,124.60 = 21,121.16 : x
  2. Step 2: Convert to fraction form
    58,057.16/87,124.60 = 21,121.16/x
  3. Step 3: Cross multiply
    58,057.16x = 87,124.60 × 21,121.16
  4. Step 4: Simplify right side
    58,057.16x = 1,840,172,616.54
  5. Step 5: Solve for x
    x = 1,840,172,616.54/58,057.16
  6. Step 6: Final answer
    x = 31,695.88

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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.