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Finding the Fourth Proportional to 65,616.45, 90,553.65 and 36,945.98

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Solution

The fourth proportional to 65,616.45, 90,553.65 and 36,945.98 is: 50,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,616.45 : 90,553.65 = 36,945.98 : x
  2. Step 2: Convert to fraction form
    65,616.45/90,553.65 = 36,945.98/x
  3. Step 3: Cross multiply
    65,616.45x = 90,553.65 × 36,945.98
  4. Step 4: Simplify right side
    65,616.45x = 3,345,592,889.06
  5. Step 5: Solve for x
    x = 3,345,592,889.06/65,616.45
  6. Step 6: Final answer
    x = 50,987.11

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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.