Home / 86,280.68-129,421.12-27,121.52

Finding the Fourth Proportional to 86,280.68, 129,421.12 and 27,121.52

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Solution

The fourth proportional to 86,280.68, 129,421.12 and 27,121.52 is: 40,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,280.68 : 129,421.12 = 27,121.52 : x
  2. Step 2: Convert to fraction form
    86,280.68/129,421.12 = 27,121.52/x
  3. Step 3: Cross multiply
    86,280.68x = 129,421.12 × 27,121.52
  4. Step 4: Simplify right side
    86,280.68x = 3,510,097,494.50
  5. Step 5: Solve for x
    x = 3,510,097,494.50/86,280.68
  6. Step 6: Final answer
    x = 40,682.31

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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.