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Finding the Fourth Proportional to 52,761.84, 72,811.08 and 28,888.08

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Solution

The fourth proportional to 52,761.84, 72,811.08 and 28,888.08 is: 39,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,761.84 : 72,811.08 = 28,888.08 : x
  2. Step 2: Convert to fraction form
    52,761.84/72,811.08 = 28,888.08/x
  3. Step 3: Cross multiply
    52,761.84x = 72,811.08 × 28,888.08
  4. Step 4: Simplify right side
    52,761.84x = 2,103,372,303.93
  5. Step 5: Solve for x
    x = 2,103,372,303.93/52,761.84
  6. Step 6: Final answer
    x = 39,865.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.