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Finding the Fourth Proportional to 77,353.99, 116,031.06 and 21,194.55

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Solution

The fourth proportional to 77,353.99, 116,031.06 and 21,194.55 is: 31,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,353.99 : 116,031.06 = 21,194.55 : x
  2. Step 2: Convert to fraction form
    77,353.99/116,031.06 = 21,194.55/x
  3. Step 3: Cross multiply
    77,353.99x = 116,031.06 × 21,194.55
  4. Step 4: Simplify right side
    77,353.99x = 2,459,226,102.72
  5. Step 5: Solve for x
    x = 2,459,226,102.72/77,353.99
  6. Step 6: Final answer
    x = 31,791.85

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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.