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Finding the Fourth Proportional to 79,541.16, 109,653.80 and 63,265.80

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Solution

The fourth proportional to 79,541.16, 109,653.80 and 63,265.80 is: 87,216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,541.16 : 109,653.80 = 63,265.80 : x
  2. Step 2: Convert to fraction form
    79,541.16/109,653.80 = 63,265.80/x
  3. Step 3: Cross multiply
    79,541.16x = 109,653.80 × 63,265.80
  4. Step 4: Simplify right side
    79,541.16x = 6,937,335,380.04
  5. Step 5: Solve for x
    x = 6,937,335,380.04/79,541.16
  6. Step 6: Final answer
    x = 87,216.92

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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.