Home / 77,518.55-116,257-21,345.28

Finding the Fourth Proportional to 77,518.55, 116,257 and 21,345.28

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Solution

The fourth proportional to 77,518.55, 116,257 and 21,345.28 is: 32,012.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,518.55 : 116,257 = 21,345.28 : x
  2. Step 2: Convert to fraction form
    77,518.55/116,257 = 21,345.28/x
  3. Step 3: Cross multiply
    77,518.55x = 116,257 × 21,345.28
  4. Step 4: Simplify right side
    77,518.55x = 2,481,538,216.96
  5. Step 5: Solve for x
    x = 2,481,538,216.96/77,518.55
  6. Step 6: Final answer
    x = 32,012.19

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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.