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Finding the Fourth Proportional to 79,989.84, 110,346 and 47,701.68

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Solution

The fourth proportional to 79,989.84, 110,346 and 47,701.68 is: 65,804.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,989.84 : 110,346 = 47,701.68 : x
  2. Step 2: Convert to fraction form
    79,989.84/110,346 = 47,701.68/x
  3. Step 3: Cross multiply
    79,989.84x = 110,346 × 47,701.68
  4. Step 4: Simplify right side
    79,989.84x = 5,263,689,581.28
  5. Step 5: Solve for x
    x = 5,263,689,581.28/79,989.84
  6. Step 6: Final answer
    x = 65,804.48

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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.