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Finding the Fourth Proportional to 90,526.54, 135,787.74 and 53,322.61

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Solution

The fourth proportional to 90,526.54, 135,787.74 and 53,322.61 is: 79,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,526.54 : 135,787.74 = 53,322.61 : x
  2. Step 2: Convert to fraction form
    90,526.54/135,787.74 = 53,322.61/x
  3. Step 3: Cross multiply
    90,526.54x = 135,787.74 × 53,322.61
  4. Step 4: Simplify right side
    90,526.54x = 7,240,556,702.80
  5. Step 5: Solve for x
    x = 7,240,556,702.80/90,526.54
  6. Step 6: Final answer
    x = 79,982.70

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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.