Home / 86,452.57-129,709.36-30,308.32

Finding the Fourth Proportional to 86,452.57, 129,709.36 and 30,308.32

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Solution

The fourth proportional to 86,452.57, 129,709.36 and 30,308.32 is: 45,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,452.57 : 129,709.36 = 30,308.32 : x
  2. Step 2: Convert to fraction form
    86,452.57/129,709.36 = 30,308.32/x
  3. Step 3: Cross multiply
    86,452.57x = 129,709.36 × 30,308.32
  4. Step 4: Simplify right side
    86,452.57x = 3,931,272,141.33
  5. Step 5: Solve for x
    x = 3,931,272,141.33/86,452.57
  6. Step 6: Final answer
    x = 45,473.17

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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.