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Finding the Fourth Proportional to 79,957.02, 110,807.40 and 78,829.50

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Solution

The fourth proportional to 79,957.02, 110,807.40 and 78,829.50 is: 109,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,957.02 : 110,807.40 = 78,829.50 : x
  2. Step 2: Convert to fraction form
    79,957.02/110,807.40 = 78,829.50/x
  3. Step 3: Cross multiply
    79,957.02x = 110,807.40 × 78,829.50
  4. Step 4: Simplify right side
    79,957.02x = 8,734,891,938.30
  5. Step 5: Solve for x
    x = 8,734,891,938.30/79,957.02
  6. Step 6: Final answer
    x = 109,244.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.