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Finding the Fourth Proportional to 72,168.48, 108,254.88 and 19,577.76

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Solution

The fourth proportional to 72,168.48, 108,254.88 and 19,577.76 is: 29,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168.48 : 108,254.88 = 19,577.76 : x
  2. Step 2: Convert to fraction form
    72,168.48/108,254.88 = 19,577.76/x
  3. Step 3: Cross multiply
    72,168.48x = 108,254.88 × 19,577.76
  4. Step 4: Simplify right side
    72,168.48x = 2,119,388,059.47
  5. Step 5: Solve for x
    x = 2,119,388,059.47/72,168.48
  6. Step 6: Final answer
    x = 29,367.23

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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.