Home / 81,669.38-112,715.40-45,861.84

Finding the Fourth Proportional to 81,669.38, 112,715.40 and 45,861.84

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Solution

The fourth proportional to 81,669.38, 112,715.40 and 45,861.84 is: 63,295.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,669.38 : 112,715.40 = 45,861.84 : x
  2. Step 2: Convert to fraction form
    81,669.38/112,715.40 = 45,861.84/x
  3. Step 3: Cross multiply
    81,669.38x = 112,715.40 × 45,861.84
  4. Step 4: Simplify right side
    81,669.38x = 5,169,335,640.34
  5. Step 5: Solve for x
    x = 5,169,335,640.34/81,669.38
  6. Step 6: Final answer
    x = 63,295.88

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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.