Home / 79,178.69-109,266.44-42,880.03

Finding the Fourth Proportional to 79,178.69, 109,266.44 and 42,880.03

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Solution

The fourth proportional to 79,178.69, 109,266.44 and 42,880.03 is: 59,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.69 : 109,266.44 = 42,880.03 : x
  2. Step 2: Convert to fraction form
    79,178.69/109,266.44 = 42,880.03/x
  3. Step 3: Cross multiply
    79,178.69x = 109,266.44 × 42,880.03
  4. Step 4: Simplify right side
    79,178.69x = 4,685,347,737.63
  5. Step 5: Solve for x
    x = 4,685,347,737.63/79,178.69
  6. Step 6: Final answer
    x = 59,174.35

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1.5x scale

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.