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Finding the Fourth Proportional to 78,886.08, 108,865.08 and 47,054.16

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Solution

The fourth proportional to 78,886.08, 108,865.08 and 47,054.16 is: 64,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,886.08 : 108,865.08 = 47,054.16 : x
  2. Step 2: Convert to fraction form
    78,886.08/108,865.08 = 47,054.16/x
  3. Step 3: Cross multiply
    78,886.08x = 108,865.08 × 47,054.16
  4. Step 4: Simplify right side
    78,886.08x = 5,122,554,892.73
  5. Step 5: Solve for x
    x = 5,122,554,892.73/78,886.08
  6. Step 6: Final answer
    x = 64,936.11

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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.