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Finding the Fourth Proportional to 79,698.06, 109,983.69 and 45,707.90

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Solution

The fourth proportional to 79,698.06, 109,983.69 and 45,707.90 is: 63,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,698.06 : 109,983.69 = 45,707.90 : x
  2. Step 2: Convert to fraction form
    79,698.06/109,983.69 = 45,707.90/x
  3. Step 3: Cross multiply
    79,698.06x = 109,983.69 × 45,707.90
  4. Step 4: Simplify right side
    79,698.06x = 5,027,122,954.23
  5. Step 5: Solve for x
    x = 5,027,122,954.23/79,698.06
  6. Step 6: Final answer
    x = 63,077.11

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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.