Home / 77,431.04-116,132.67-20,505.30

Finding the Fourth Proportional to 77,431.04, 116,132.67 and 20,505.30

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Solution

The fourth proportional to 77,431.04, 116,132.67 and 20,505.30 is: 30,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,431.04 : 116,132.67 = 20,505.30 : x
  2. Step 2: Convert to fraction form
    77,431.04/116,132.67 = 20,505.30/x
  3. Step 3: Cross multiply
    77,431.04x = 116,132.67 × 20,505.30
  4. Step 4: Simplify right side
    77,431.04x = 2,381,335,455.90
  5. Step 5: Solve for x
    x = 2,381,335,455.90/77,431.04
  6. Step 6: Final answer
    x = 30,754.27

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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.