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Finding the Fourth Proportional to 72,508.75, 108,750.58 and 19,201.50

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Solution

The fourth proportional to 72,508.75, 108,750.58 and 19,201.50 is: 28,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,508.75 : 108,750.58 = 19,201.50 : x
  2. Step 2: Convert to fraction form
    72,508.75/108,750.58 = 19,201.50/x
  3. Step 3: Cross multiply
    72,508.75x = 108,750.58 × 19,201.50
  4. Step 4: Simplify right side
    72,508.75x = 2,088,174,261.87
  5. Step 5: Solve for x
    x = 2,088,174,261.87/72,508.75
  6. Step 6: Final answer
    x = 28,798.93

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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.