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Finding the Fourth Proportional to 80,466.92, 120,700.39 and 42,913.23

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Solution

The fourth proportional to 80,466.92, 120,700.39 and 42,913.23 is: 64,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,466.92 : 120,700.39 = 42,913.23 : x
  2. Step 2: Convert to fraction form
    80,466.92/120,700.39 = 42,913.23/x
  3. Step 3: Cross multiply
    80,466.92x = 120,700.39 × 42,913.23
  4. Step 4: Simplify right side
    80,466.92x = 5,179,643,117.71
  5. Step 5: Solve for x
    x = 5,179,643,117.71/80,466.92
  6. Step 6: Final answer
    x = 64,369.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.