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Finding the Fourth Proportional to 81,618.84, 112,639.01 and 45,811.17

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Solution

The fourth proportional to 81,618.84, 112,639.01 and 45,811.17 is: 63,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,618.84 : 112,639.01 = 45,811.17 : x
  2. Step 2: Convert to fraction form
    81,618.84/112,639.01 = 45,811.17/x
  3. Step 3: Cross multiply
    81,618.84x = 112,639.01 × 45,811.17
  4. Step 4: Simplify right side
    81,618.84x = 5,160,124,606.69
  5. Step 5: Solve for x
    x = 5,160,124,606.69/81,618.84
  6. Step 6: Final answer
    x = 63,222.22

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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.