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Finding the Fourth Proportional to 65,495.52, 90,385.20 and 36,815.76

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Solution

The fourth proportional to 65,495.52, 90,385.20 and 36,815.76 is: 50,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,495.52 : 90,385.20 = 36,815.76 : x
  2. Step 2: Convert to fraction form
    65,495.52/90,385.20 = 36,815.76/x
  3. Step 3: Cross multiply
    65,495.52x = 90,385.20 × 36,815.76
  4. Step 4: Simplify right side
    65,495.52x = 3,327,599,830.75
  5. Step 5: Solve for x
    x = 3,327,599,830.75/65,495.52
  6. Step 6: Final answer
    x = 50,806.53

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1.5x scale

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.