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Finding the Fourth Proportional to 52,290, 72,160.67 and 28,416.68

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Solution

The fourth proportional to 52,290, 72,160.67 and 28,416.68 is: 39,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,290 : 72,160.67 = 28,416.68 : x
  2. Step 2: Convert to fraction form
    52,290/72,160.67 = 28,416.68/x
  3. Step 3: Cross multiply
    52,290x = 72,160.67 × 28,416.68
  4. Step 4: Simplify right side
    52,290x = 2,050,566,165.09
  5. Step 5: Solve for x
    x = 2,050,566,165.09/52,290
  6. Step 6: Final answer
    x = 39,215.26

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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.