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Finding the Fourth Proportional to 79,740.64, 110,038.14 and 43,929.70

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Solution

The fourth proportional to 79,740.64, 110,038.14 and 43,929.70 is: 60,620.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,740.64 : 110,038.14 = 43,929.70 : x
  2. Step 2: Convert to fraction form
    79,740.64/110,038.14 = 43,929.70/x
  3. Step 3: Cross multiply
    79,740.64x = 110,038.14 × 43,929.70
  4. Step 4: Simplify right side
    79,740.64x = 4,833,942,478.76
  5. Step 5: Solve for x
    x = 4,833,942,478.76/79,740.64
  6. Step 6: Final answer
    x = 60,620.81

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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.