Home / 86,634.80-129,952.20-53,246.60

Finding the Fourth Proportional to 86,634.80, 129,952.20 and 53,246.60

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Solution

The fourth proportional to 86,634.80, 129,952.20 and 53,246.60 is: 79,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,634.80 : 129,952.20 = 53,246.60 : x
  2. Step 2: Convert to fraction form
    86,634.80/129,952.20 = 53,246.60/x
  3. Step 3: Cross multiply
    86,634.80x = 129,952.20 × 53,246.60
  4. Step 4: Simplify right side
    86,634.80x = 6,919,512,812.52
  5. Step 5: Solve for x
    x = 6,919,512,812.52/86,634.80
  6. Step 6: Final answer
    x = 79,869.90

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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.