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Finding the Fourth Proportional to 79,703.60, 109,994.36 and 45,721.67

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Solution

The fourth proportional to 79,703.60, 109,994.36 and 45,721.67 is: 63,097.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.60 : 109,994.36 = 45,721.67 : x
  2. Step 2: Convert to fraction form
    79,703.60/109,994.36 = 45,721.67/x
  3. Step 3: Cross multiply
    79,703.60x = 109,994.36 × 45,721.67
  4. Step 4: Simplify right side
    79,703.60x = 5,029,125,051.20
  5. Step 5: Solve for x
    x = 5,029,125,051.20/79,703.60
  6. Step 6: Final answer
    x = 63,097.84

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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.