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Finding the Fourth Proportional to 89,020, 133,426.24 and 49,558.24

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Solution

The fourth proportional to 89,020, 133,426.24 and 49,558.24 is: 74,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,020 : 133,426.24 = 49,558.24 : x
  2. Step 2: Convert to fraction form
    89,020/133,426.24 = 49,558.24/x
  3. Step 3: Cross multiply
    89,020x = 133,426.24 × 49,558.24
  4. Step 4: Simplify right side
    89,020x = 6,612,369,624.22
  5. Step 5: Solve for x
    x = 6,612,369,624.22/89,020
  6. Step 6: Final answer
    x = 74,279.60

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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.