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Finding the Fourth Proportional to 73,960.58, 102,140.16 and 47,115.20

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Solution

The fourth proportional to 73,960.58, 102,140.16 and 47,115.20 is: 65,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,960.58 : 102,140.16 = 47,115.20 : x
  2. Step 2: Convert to fraction form
    73,960.58/102,140.16 = 47,115.20/x
  3. Step 3: Cross multiply
    73,960.58x = 102,140.16 × 47,115.20
  4. Step 4: Simplify right side
    73,960.58x = 4,812,354,066.43
  5. Step 5: Solve for x
    x = 4,812,354,066.43/73,960.58
  6. Step 6: Final answer
    x = 65,066.47

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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.