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Finding the Fourth Proportional to 64,788.36, 89,410.70 and 36,108.01

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Solution

The fourth proportional to 64,788.36, 89,410.70 and 36,108.01 is: 49,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,788.36 : 89,410.70 = 36,108.01 : x
  2. Step 2: Convert to fraction form
    64,788.36/89,410.70 = 36,108.01/x
  3. Step 3: Cross multiply
    64,788.36x = 89,410.70 × 36,108.01
  4. Step 4: Simplify right side
    64,788.36x = 3,228,442,651.74
  5. Step 5: Solve for x
    x = 3,228,442,651.74/64,788.36
  6. Step 6: Final answer
    x = 49,830.60

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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.