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Finding the Fourth Proportional to 64,656.32, 96,968.28 and 45,881.60

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Solution

The fourth proportional to 64,656.32, 96,968.28 and 45,881.60 is: 68,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,656.32 : 96,968.28 = 45,881.60 : x
  2. Step 2: Convert to fraction form
    64,656.32/96,968.28 = 45,881.60/x
  3. Step 3: Cross multiply
    64,656.32x = 96,968.28 × 45,881.60
  4. Step 4: Simplify right side
    64,656.32x = 4,449,059,835.65
  5. Step 5: Solve for x
    x = 4,449,059,835.65/64,656.32
  6. Step 6: Final answer
    x = 68,810.90

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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.