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Finding the Fourth Proportional to 81,549.76, 112,580.84 and 63,359.84

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Solution

The fourth proportional to 81,549.76, 112,580.84 and 63,359.84 is: 87,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,549.76 : 112,580.84 = 63,359.84 : x
  2. Step 2: Convert to fraction form
    81,549.76/112,580.84 = 63,359.84/x
  3. Step 3: Cross multiply
    81,549.76x = 112,580.84 × 63,359.84
  4. Step 4: Simplify right side
    81,549.76x = 7,133,104,009.47
  5. Step 5: Solve for x
    x = 7,133,104,009.47/81,549.76
  6. Step 6: Final answer
    x = 87,469.34

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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.