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Finding the Fourth Proportional to 64,281.60, 96,487.20 and 31,028.40

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Solution

The fourth proportional to 64,281.60, 96,487.20 and 31,028.40 is: 46,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,281.60 : 96,487.20 = 31,028.40 : x
  2. Step 2: Convert to fraction form
    64,281.60/96,487.20 = 31,028.40/x
  3. Step 3: Cross multiply
    64,281.60x = 96,487.20 × 31,028.40
  4. Step 4: Simplify right side
    64,281.60x = 2,993,843,436.48
  5. Step 5: Solve for x
    x = 2,993,843,436.48/64,281.60
  6. Step 6: Final answer
    x = 46,573.88

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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.