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Finding the Fourth Proportional to 65,503.54, 90,385.77 and 36,819.15

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Solution

The fourth proportional to 65,503.54, 90,385.77 and 36,819.15 is: 50,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,503.54 : 90,385.77 = 36,819.15 : x
  2. Step 2: Convert to fraction form
    65,503.54/90,385.77 = 36,819.15/x
  3. Step 3: Cross multiply
    65,503.54x = 90,385.77 × 36,819.15
  4. Step 4: Simplify right side
    65,503.54x = 3,327,927,223.50
  5. Step 5: Solve for x
    x = 3,327,927,223.50/65,503.54
  6. Step 6: Final answer
    x = 50,805.30

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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.