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Finding the Fourth Proportional to 72,551.65, 108,762.55 and 28,167.85

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Solution

The fourth proportional to 72,551.65, 108,762.55 and 28,167.85 is: 42,226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,551.65 : 108,762.55 = 28,167.85 : x
  2. Step 2: Convert to fraction form
    72,551.65/108,762.55 = 28,167.85/x
  3. Step 3: Cross multiply
    72,551.65x = 108,762.55 × 28,167.85
  4. Step 4: Simplify right side
    72,551.65x = 3,063,607,259.55
  5. Step 5: Solve for x
    x = 3,063,607,259.55/72,551.65
  6. Step 6: Final answer
    x = 42,226.57

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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.