Home / 58,078.01-80,172.12-39,240.65

Finding the Fourth Proportional to 58,078.01, 80,172.12 and 39,240.65

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Solution

The fourth proportional to 58,078.01, 80,172.12 and 39,240.65 is: 54,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,078.01 : 80,172.12 = 39,240.65 : x
  2. Step 2: Convert to fraction form
    58,078.01/80,172.12 = 39,240.65/x
  3. Step 3: Cross multiply
    58,078.01x = 80,172.12 × 39,240.65
  4. Step 4: Simplify right side
    58,078.01x = 3,146,006,100.68
  5. Step 5: Solve for x
    x = 3,146,006,100.68/58,078.01
  6. Step 6: Final answer
    x = 54,168.63

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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.