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Finding the Fourth Proportional to 64,396.90, 96,529.40 and 26,978.70

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Solution

The fourth proportional to 64,396.90, 96,529.40 and 26,978.70 is: 40,440.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,396.90 : 96,529.40 = 26,978.70 : x
  2. Step 2: Convert to fraction form
    64,396.90/96,529.40 = 26,978.70/x
  3. Step 3: Cross multiply
    64,396.90x = 96,529.40 × 26,978.70
  4. Step 4: Simplify right side
    64,396.90x = 2,604,237,161.70
  5. Step 5: Solve for x
    x = 2,604,237,161.70/64,396.90
  6. Step 6: Final answer
    x = 40,440.41

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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.