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Finding the Fourth Proportional to 70,479.52, 106,141.60 and 64,180.96

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Solution

The fourth proportional to 70,479.52, 106,141.60 and 64,180.96 is: 96,656.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,479.52 : 106,141.60 = 64,180.96 : x
  2. Step 2: Convert to fraction form
    70,479.52/106,141.60 = 64,180.96/x
  3. Step 3: Cross multiply
    70,479.52x = 106,141.60 × 64,180.96
  4. Step 4: Simplify right side
    70,479.52x = 6,812,269,783.94
  5. Step 5: Solve for x
    x = 6,812,269,783.94/70,479.52
  6. Step 6: Final answer
    x = 96,656.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.