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Finding the Fourth Proportional to 79,706.71, 119,567.40 and 20,542.60

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Solution

The fourth proportional to 79,706.71, 119,567.40 and 20,542.60 is: 30,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,706.71 : 119,567.40 = 20,542.60 : x
  2. Step 2: Convert to fraction form
    79,706.71/119,567.40 = 20,542.60/x
  3. Step 3: Cross multiply
    79,706.71x = 119,567.40 × 20,542.60
  4. Step 4: Simplify right side
    79,706.71x = 2,456,225,271.24
  5. Step 5: Solve for x
    x = 2,456,225,271.24/79,706.71
  6. Step 6: Final answer
    x = 30,815.79

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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.