Home / 78,037.20-117,088.20-49,988.88

Finding the Fourth Proportional to 78,037.20, 117,088.20 and 49,988.88

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Solution

The fourth proportional to 78,037.20, 117,088.20 and 49,988.88 is: 75,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.20 : 117,088.20 = 49,988.88 : x
  2. Step 2: Convert to fraction form
    78,037.20/117,088.20 = 49,988.88/x
  3. Step 3: Cross multiply
    78,037.20x = 117,088.20 × 49,988.88
  4. Step 4: Simplify right side
    78,037.20x = 5,853,107,979.22
  5. Step 5: Solve for x
    x = 5,853,107,979.22/78,037.20
  6. Step 6: Final answer
    x = 75,004.07

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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.