Home / 80,541.30-111,143.40-48,293.72

Finding the Fourth Proportional to 80,541.30, 111,143.40 and 48,293.72

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Solution

The fourth proportional to 80,541.30, 111,143.40 and 48,293.72 is: 66,643.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,541.30 : 111,143.40 = 48,293.72 : x
  2. Step 2: Convert to fraction form
    80,541.30/111,143.40 = 48,293.72/x
  3. Step 3: Cross multiply
    80,541.30x = 111,143.40 × 48,293.72
  4. Step 4: Simplify right side
    80,541.30x = 5,367,527,442.26
  5. Step 5: Solve for x
    x = 5,367,527,442.26/80,541.30
  6. Step 6: Final answer
    x = 66,643.17

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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.