Home / 86,351.60-129,539.18-30,178.67

Finding the Fourth Proportional to 86,351.60, 129,539.18 and 30,178.67

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Solution

The fourth proportional to 86,351.60, 129,539.18 and 30,178.67 is: 45,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,351.60 : 129,539.18 = 30,178.67 : x
  2. Step 2: Convert to fraction form
    86,351.60/129,539.18 = 30,178.67/x
  3. Step 3: Cross multiply
    86,351.60x = 129,539.18 × 30,178.67
  4. Step 4: Simplify right side
    86,351.60x = 3,909,320,165.29
  5. Step 5: Solve for x
    x = 3,909,320,165.29/86,351.60
  6. Step 6: Final answer
    x = 45,272.12

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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.