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Finding the Fourth Proportional to 93,380.80, 128,907.25 and 63,257.61

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Solution

The fourth proportional to 93,380.80, 128,907.25 and 63,257.61 is: 87,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,380.80 : 128,907.25 = 63,257.61 : x
  2. Step 2: Convert to fraction form
    93,380.80/128,907.25 = 63,257.61/x
  3. Step 3: Cross multiply
    93,380.80x = 128,907.25 × 63,257.61
  4. Step 4: Simplify right side
    93,380.80x = 8,154,364,146.83
  5. Step 5: Solve for x
    x = 8,154,364,146.83/93,380.80
  6. Step 6: Final answer
    x = 87,323.78

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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.