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Finding the Fourth Proportional to 85,384.98, 117,830.84 and 49,583.79

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Solution

The fourth proportional to 85,384.98, 117,830.84 and 49,583.79 is: 68,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,384.98 : 117,830.84 = 49,583.79 : x
  2. Step 2: Convert to fraction form
    85,384.98/117,830.84 = 49,583.79/x
  3. Step 3: Cross multiply
    85,384.98x = 117,830.84 × 49,583.79
  4. Step 4: Simplify right side
    85,384.98x = 5,842,499,378.16
  5. Step 5: Solve for x
    x = 5,842,499,378.16/85,384.98
  6. Step 6: Final answer
    x = 68,425.38

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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.