Home / 76,964.18-115,458.08-20,806.13

Finding the Fourth Proportional to 76,964.18, 115,458.08 and 20,806.13

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Solution

The fourth proportional to 76,964.18, 115,458.08 and 20,806.13 is: 31,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,964.18 : 115,458.08 = 20,806.13 : x
  2. Step 2: Convert to fraction form
    76,964.18/115,458.08 = 20,806.13/x
  3. Step 3: Cross multiply
    76,964.18x = 115,458.08 × 20,806.13
  4. Step 4: Simplify right side
    76,964.18x = 2,402,236,006.64
  5. Step 5: Solve for x
    x = 2,402,236,006.64/76,964.18
  6. Step 6: Final answer
    x = 31,212.39

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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.