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Finding the Fourth Proportional to 80,477.40, 120,716.10 and 63,888.60

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Solution

The fourth proportional to 80,477.40, 120,716.10 and 63,888.60 is: 95,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,477.40 : 120,716.10 = 63,888.60 : x
  2. Step 2: Convert to fraction form
    80,477.40/120,716.10 = 63,888.60/x
  3. Step 3: Cross multiply
    80,477.40x = 120,716.10 × 63,888.60
  4. Step 4: Simplify right side
    80,477.40x = 7,712,382,626.46
  5. Step 5: Solve for x
    x = 7,712,382,626.46/80,477.40
  6. Step 6: Final answer
    x = 95,832.90

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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.