Home / 86,318.28-129,477.83-30,158.15

Finding the Fourth Proportional to 86,318.28, 129,477.83 and 30,158.15

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Solution

The fourth proportional to 86,318.28, 129,477.83 and 30,158.15 is: 45,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,318.28 : 129,477.83 = 30,158.15 : x
  2. Step 2: Convert to fraction form
    86,318.28/129,477.83 = 30,158.15/x
  3. Step 3: Cross multiply
    86,318.28x = 129,477.83 × 30,158.15
  4. Step 4: Simplify right side
    86,318.28x = 3,904,811,020.63
  5. Step 5: Solve for x
    x = 3,904,811,020.63/86,318.28
  6. Step 6: Final answer
    x = 45,237.36

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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.