Home / 49,128.80-73,631.48-21,015.77

Finding the Fourth Proportional to 49,128.80, 73,631.48 and 21,015.77

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Solution

The fourth proportional to 49,128.80, 73,631.48 and 21,015.77 is: 31,497.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,128.80 : 73,631.48 = 21,015.77 : x
  2. Step 2: Convert to fraction form
    49,128.80/73,631.48 = 21,015.77/x
  3. Step 3: Cross multiply
    49,128.80x = 73,631.48 × 21,015.77
  4. Step 4: Simplify right side
    49,128.80x = 1,547,421,775.20
  5. Step 5: Solve for x
    x = 1,547,421,775.20/49,128.80
  6. Step 6: Final answer
    x = 31,497.25

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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.