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Finding the Fourth Proportional to 75,272.36, 112,927.52 and 53,128.98

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Solution

The fourth proportional to 75,272.36, 112,927.52 and 53,128.98 is: 79,706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,272.36 : 112,927.52 = 53,128.98 : x
  2. Step 2: Convert to fraction form
    75,272.36/112,927.52 = 53,128.98/x
  3. Step 3: Cross multiply
    75,272.36x = 112,927.52 × 53,128.98
  4. Step 4: Simplify right side
    75,272.36x = 5,999,723,685.88
  5. Step 5: Solve for x
    x = 5,999,723,685.88/75,272.36
  6. Step 6: Final answer
    x = 79,706.87

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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.