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Finding the Fourth Proportional to 64,411.40, 96,501.90 and 54,504.20

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Solution

The fourth proportional to 64,411.40, 96,501.90 and 54,504.20 is: 81,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,411.40 : 96,501.90 = 54,504.20 : x
  2. Step 2: Convert to fraction form
    64,411.40/96,501.90 = 54,504.20/x
  3. Step 3: Cross multiply
    64,411.40x = 96,501.90 × 54,504.20
  4. Step 4: Simplify right side
    64,411.40x = 5,259,758,857.98
  5. Step 5: Solve for x
    x = 5,259,758,857.98/64,411.40
  6. Step 6: Final answer
    x = 81,658.82

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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.