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Finding the Fourth Proportional to 77,499.84, 106,981.92 and 52,383.36

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Solution

The fourth proportional to 77,499.84, 106,981.92 and 52,383.36 is: 72,310.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,499.84 : 106,981.92 = 52,383.36 : x
  2. Step 2: Convert to fraction form
    77,499.84/106,981.92 = 52,383.36/x
  3. Step 3: Cross multiply
    77,499.84x = 106,981.92 × 52,383.36
  4. Step 4: Simplify right side
    77,499.84x = 5,604,072,428.85
  5. Step 5: Solve for x
    x = 5,604,072,428.85/77,499.84
  6. Step 6: Final answer
    x = 72,310.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.