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Finding the Fourth Proportional to 72,798.44, 100,446.35 and 42,577.86

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Solution

The fourth proportional to 72,798.44, 100,446.35 and 42,577.86 is: 58,748.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.44 : 100,446.35 = 42,577.86 : x
  2. Step 2: Convert to fraction form
    72,798.44/100,446.35 = 42,577.86/x
  3. Step 3: Cross multiply
    72,798.44x = 100,446.35 × 42,577.86
  4. Step 4: Simplify right side
    72,798.44x = 4,276,790,387.02
  5. Step 5: Solve for x
    x = 4,276,790,387.02/72,798.44
  6. Step 6: Final answer
    x = 58,748.38

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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.