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Finding the Fourth Proportional to 52,867.50, 72,950.49 and 28,987.89

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Solution

The fourth proportional to 52,867.50, 72,950.49 and 28,987.89 is: 39,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,867.50 : 72,950.49 = 28,987.89 : x
  2. Step 2: Convert to fraction form
    52,867.50/72,950.49 = 28,987.89/x
  3. Step 3: Cross multiply
    52,867.50x = 72,950.49 × 28,987.89
  4. Step 4: Simplify right side
    52,867.50x = 2,114,680,779.57
  5. Step 5: Solve for x
    x = 2,114,680,779.57/52,867.50
  6. Step 6: Final answer
    x = 39,999.64

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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.