Home / 86,583.28-129,886.08-30,419.36

Finding the Fourth Proportional to 86,583.28, 129,886.08 and 30,419.36

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Solution

The fourth proportional to 86,583.28, 129,886.08 and 30,419.36 is: 45,632.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,583.28 : 129,886.08 = 30,419.36 : x
  2. Step 2: Convert to fraction form
    86,583.28/129,886.08 = 30,419.36/x
  3. Step 3: Cross multiply
    86,583.28x = 129,886.08 × 30,419.36
  4. Step 4: Simplify right side
    86,583.28x = 3,951,051,426.51
  5. Step 5: Solve for x
    x = 3,951,051,426.51/86,583.28
  6. Step 6: Final answer
    x = 45,632.96

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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.