Home / 76,905.80-115,358.70-47,227.40

Finding the Fourth Proportional to 76,905.80, 115,358.70 and 47,227.40

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Solution

The fourth proportional to 76,905.80, 115,358.70 and 47,227.40 is: 70,841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,905.80 : 115,358.70 = 47,227.40 : x
  2. Step 2: Convert to fraction form
    76,905.80/115,358.70 = 47,227.40/x
  3. Step 3: Cross multiply
    76,905.80x = 115,358.70 × 47,227.40
  4. Step 4: Simplify right side
    76,905.80x = 5,448,091,468.38
  5. Step 5: Solve for x
    x = 5,448,091,468.38/76,905.80
  6. Step 6: Final answer
    x = 70,841.10

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1.5x scale

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.