Home / 78,331.21-108,099.04-42,521.23

Finding the Fourth Proportional to 78,331.21, 108,099.04 and 42,521.23

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Solution

The fourth proportional to 78,331.21, 108,099.04 and 42,521.23 is: 58,680.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.21 : 108,099.04 = 42,521.23 : x
  2. Step 2: Convert to fraction form
    78,331.21/108,099.04 = 42,521.23/x
  3. Step 3: Cross multiply
    78,331.21x = 108,099.04 × 42,521.23
  4. Step 4: Simplify right side
    78,331.21x = 4,596,504,142.62
  5. Step 5: Solve for x
    x = 4,596,504,142.62/78,331.21
  6. Step 6: Final answer
    x = 58,680.37

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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.