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Finding the Fourth Proportional to 80,516.16, 120,801.60 and 25,113.60

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Solution

The fourth proportional to 80,516.16, 120,801.60 and 25,113.60 is: 37,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,516.16 : 120,801.60 = 25,113.60 : x
  2. Step 2: Convert to fraction form
    80,516.16/120,801.60 = 25,113.60/x
  3. Step 3: Cross multiply
    80,516.16x = 120,801.60 × 25,113.60
  4. Step 4: Simplify right side
    80,516.16x = 3,033,763,061.76
  5. Step 5: Solve for x
    x = 3,033,763,061.76/80,516.16
  6. Step 6: Final answer
    x = 37,678.93

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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.