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Finding the Fourth Proportional to 78,891.29, 108,869.88 and 46,637.54

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Solution

The fourth proportional to 78,891.29, 108,869.88 and 46,637.54 is: 64,359.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,891.29 : 108,869.88 = 46,637.54 : x
  2. Step 2: Convert to fraction form
    78,891.29/108,869.88 = 46,637.54/x
  3. Step 3: Cross multiply
    78,891.29x = 108,869.88 × 46,637.54
  4. Step 4: Simplify right side
    78,891.29x = 5,077,422,838.95
  5. Step 5: Solve for x
    x = 5,077,422,838.95/78,891.29
  6. Step 6: Final answer
    x = 64,359.74

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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.