Home / 86,421.59-129,629.96-47,226.91

Finding the Fourth Proportional to 86,421.59, 129,629.96 and 47,226.91

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Solution

The fourth proportional to 86,421.59, 129,629.96 and 47,226.91 is: 70,839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,421.59 : 129,629.96 = 47,226.91 : x
  2. Step 2: Convert to fraction form
    86,421.59/129,629.96 = 47,226.91/x
  3. Step 3: Cross multiply
    86,421.59x = 129,629.96 × 47,226.91
  4. Step 4: Simplify right side
    86,421.59x = 6,122,022,218.09
  5. Step 5: Solve for x
    x = 6,122,022,218.09/86,421.59
  6. Step 6: Final answer
    x = 70,839.04

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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.