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Finding the Fourth Proportional to 64,902.40, 97,411.20 and 55,571.20

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Solution

The fourth proportional to 64,902.40, 97,411.20 and 55,571.20 is: 83,406.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,902.40 : 97,411.20 = 55,571.20 : x
  2. Step 2: Convert to fraction form
    64,902.40/97,411.20 = 55,571.20/x
  3. Step 3: Cross multiply
    64,902.40x = 97,411.20 × 55,571.20
  4. Step 4: Simplify right side
    64,902.40x = 5,413,257,277.44
  5. Step 5: Solve for x
    x = 5,413,257,277.44/64,902.40
  6. Step 6: Final answer
    x = 83,406.12

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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.