Home / 53,718.76-80,528.06-18,155.21

Finding the Fourth Proportional to 53,718.76, 80,528.06 and 18,155.21

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Solution

The fourth proportional to 53,718.76, 80,528.06 and 18,155.21 is: 27,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,718.76 : 80,528.06 = 18,155.21 : x
  2. Step 2: Convert to fraction form
    53,718.76/80,528.06 = 18,155.21/x
  3. Step 3: Cross multiply
    53,718.76x = 80,528.06 × 18,155.21
  4. Step 4: Simplify right side
    53,718.76x = 1,462,004,018.82
  5. Step 5: Solve for x
    x = 1,462,004,018.82/53,718.76
  6. Step 6: Final answer
    x = 27,215.89

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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.