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Finding the Fourth Proportional to 55,955.91, 83,915.90 and 18,509.01

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Solution

The fourth proportional to 55,955.91, 83,915.90 and 18,509.01 is: 27,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,955.91 : 83,915.90 = 18,509.01 : x
  2. Step 2: Convert to fraction form
    55,955.91/83,915.90 = 18,509.01/x
  3. Step 3: Cross multiply
    55,955.91x = 83,915.90 × 18,509.01
  4. Step 4: Simplify right side
    55,955.91x = 1,553,199,894.44
  5. Step 5: Solve for x
    x = 1,553,199,894.44/55,955.91
  6. Step 6: Final answer
    x = 27,757.56

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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.