Home / 76,623.63-114,935.44-21,219.63

Finding the Fourth Proportional to 76,623.63, 114,935.44 and 21,219.63

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Solution

The fourth proportional to 76,623.63, 114,935.44 and 21,219.63 is: 31,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,623.63 : 114,935.44 = 21,219.63 : x
  2. Step 2: Convert to fraction form
    76,623.63/114,935.44 = 21,219.63/x
  3. Step 3: Cross multiply
    76,623.63x = 114,935.44 × 21,219.63
  4. Step 4: Simplify right side
    76,623.63x = 2,438,887,510.69
  5. Step 5: Solve for x
    x = 2,438,887,510.69/76,623.63
  6. Step 6: Final answer
    x = 31,829.44

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Double scale
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Similar ratio
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1.5x scale

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.