Home / 86,482.49-129,735.14-30,318.30

Finding the Fourth Proportional to 86,482.49, 129,735.14 and 30,318.30

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Solution

The fourth proportional to 86,482.49, 129,735.14 and 30,318.30 is: 45,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,482.49 : 129,735.14 = 30,318.30 : x
  2. Step 2: Convert to fraction form
    86,482.49/129,735.14 = 30,318.30/x
  3. Step 3: Cross multiply
    86,482.49x = 129,735.14 × 30,318.30
  4. Step 4: Simplify right side
    86,482.49x = 3,933,348,743.47
  5. Step 5: Solve for x
    x = 3,933,348,743.47/86,482.49
  6. Step 6: Final answer
    x = 45,481.45

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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.