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Finding the Fourth Proportional to 64,101.60, 96,155.64 and 21,986.64

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Solution

The fourth proportional to 64,101.60, 96,155.64 and 21,986.64 is: 32,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,101.60 : 96,155.64 = 21,986.64 : x
  2. Step 2: Convert to fraction form
    64,101.60/96,155.64 = 21,986.64/x
  3. Step 3: Cross multiply
    64,101.60x = 96,155.64 × 21,986.64
  4. Step 4: Simplify right side
    64,101.60x = 2,114,139,440.65
  5. Step 5: Solve for x
    x = 2,114,139,440.65/64,101.60
  6. Step 6: Final answer
    x = 32,981.07

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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.