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Finding the Fourth Proportional to 72,883.76, 109,255.92 and 28,495.76

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Solution

The fourth proportional to 72,883.76, 109,255.92 and 28,495.76 is: 42,716.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,883.76 : 109,255.92 = 28,495.76 : x
  2. Step 2: Convert to fraction form
    72,883.76/109,255.92 = 28,495.76/x
  3. Step 3: Cross multiply
    72,883.76x = 109,255.92 × 28,495.76
  4. Step 4: Simplify right side
    72,883.76x = 3,113,330,474.90
  5. Step 5: Solve for x
    x = 3,113,330,474.90/72,883.76
  6. Step 6: Final answer
    x = 42,716.38

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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.