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Finding the Fourth Proportional to 72,537.84, 108,779.06 and 28,158.86

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Solution

The fourth proportional to 72,537.84, 108,779.06 and 28,158.86 is: 42,227.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,537.84 : 108,779.06 = 28,158.86 : x
  2. Step 2: Convert to fraction form
    72,537.84/108,779.06 = 28,158.86/x
  3. Step 3: Cross multiply
    72,537.84x = 108,779.06 × 28,158.86
  4. Step 4: Simplify right side
    72,537.84x = 3,063,094,321.47
  5. Step 5: Solve for x
    x = 3,063,094,321.47/72,537.84
  6. Step 6: Final answer
    x = 42,227.54

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1.5x scale

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.