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Finding the Fourth Proportional to 81,476.69, 112,435.70 and 45,669.02

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Solution

The fourth proportional to 81,476.69, 112,435.70 and 45,669.02 is: 63,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,476.69 : 112,435.70 = 45,669.02 : x
  2. Step 2: Convert to fraction form
    81,476.69/112,435.70 = 45,669.02/x
  3. Step 3: Cross multiply
    81,476.69x = 112,435.70 × 45,669.02
  4. Step 4: Simplify right side
    81,476.69x = 5,134,827,441.49
  5. Step 5: Solve for x
    x = 5,134,827,441.49/81,476.69
  6. Step 6: Final answer
    x = 63,022.05

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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.