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Finding the Fourth Proportional to 65,960.80, 99,056.40 and 63,887.20

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Solution

The fourth proportional to 65,960.80, 99,056.40 and 63,887.20 is: 95,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,960.80 : 99,056.40 = 63,887.20 : x
  2. Step 2: Convert to fraction form
    65,960.80/99,056.40 = 63,887.20/x
  3. Step 3: Cross multiply
    65,960.80x = 99,056.40 × 63,887.20
  4. Step 4: Simplify right side
    65,960.80x = 6,328,436,038.08
  5. Step 5: Solve for x
    x = 6,328,436,038.08/65,960.80
  6. Step 6: Final answer
    x = 95,942.38

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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.