Home / 86,634.81-129,993.54-47,191.05

Finding the Fourth Proportional to 86,634.81, 129,993.54 and 47,191.05

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Solution

The fourth proportional to 86,634.81, 129,993.54 and 47,191.05 is: 70,809.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,634.81 : 129,993.54 = 47,191.05 : x
  2. Step 2: Convert to fraction form
    86,634.81/129,993.54 = 47,191.05/x
  3. Step 3: Cross multiply
    86,634.81x = 129,993.54 × 47,191.05
  4. Step 4: Simplify right side
    86,634.81x = 6,134,531,468.85
  5. Step 5: Solve for x
    x = 6,134,531,468.85/86,634.81
  6. Step 6: Final answer
    x = 70,809.08

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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.