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Finding the Fourth Proportional to 52,957.50, 79,415.48 and 19,215.50

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Solution

The fourth proportional to 52,957.50, 79,415.48 and 19,215.50 is: 28,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,957.50 : 79,415.48 = 19,215.50 : x
  2. Step 2: Convert to fraction form
    52,957.50/79,415.48 = 19,215.50/x
  3. Step 3: Cross multiply
    52,957.50x = 79,415.48 × 19,215.50
  4. Step 4: Simplify right side
    52,957.50x = 1,526,008,155.94
  5. Step 5: Solve for x
    x = 1,526,008,155.94/52,957.50
  6. Step 6: Final answer
    x = 28,815.71

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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.