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Finding the Fourth Proportional to 48,071.88, 72,120.78 and 43,445.16

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Solution

The fourth proportional to 48,071.88, 72,120.78 and 43,445.16 is: 65,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,071.88 : 72,120.78 = 43,445.16 : x
  2. Step 2: Convert to fraction form
    48,071.88/72,120.78 = 43,445.16/x
  3. Step 3: Cross multiply
    48,071.88x = 72,120.78 × 43,445.16
  4. Step 4: Simplify right side
    48,071.88x = 3,133,298,826.42
  5. Step 5: Solve for x
    x = 3,133,298,826.42/48,071.88
  6. Step 6: Final answer
    x = 65,179.45

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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.