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Finding the Fourth Proportional to 112,459.60, 168,665.10 and 49,279.60

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Solution

The fourth proportional to 112,459.60, 168,665.10 and 49,279.60 is: 73,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,459.60 : 168,665.10 = 49,279.60 : x
  2. Step 2: Convert to fraction form
    112,459.60/168,665.10 = 49,279.60/x
  3. Step 3: Cross multiply
    112,459.60x = 168,665.10 × 49,279.60
  4. Step 4: Simplify right side
    112,459.60x = 8,311,748,661.96
  5. Step 5: Solve for x
    x = 8,311,748,661.96/112,459.60
  6. Step 6: Final answer
    x = 73,908.75

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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.