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Finding the Fourth Proportional to 76,153.25, 104,903.70 and 64,786.34

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Solution

The fourth proportional to 76,153.25, 104,903.70 and 64,786.34 is: 89,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,153.25 : 104,903.70 = 64,786.34 : x
  2. Step 2: Convert to fraction form
    76,153.25/104,903.70 = 64,786.34/x
  3. Step 3: Cross multiply
    76,153.25x = 104,903.70 × 64,786.34
  4. Step 4: Simplify right side
    76,153.25x = 6,796,326,775.46
  5. Step 5: Solve for x
    x = 6,796,326,775.46/76,153.25
  6. Step 6: Final answer
    x = 89,245.39

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1.5x scale

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.