Home / 77,420.28-116,130.57-21,261.12

Finding the Fourth Proportional to 77,420.28, 116,130.57 and 21,261.12

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Solution

The fourth proportional to 77,420.28, 116,130.57 and 21,261.12 is: 31,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,420.28 : 116,130.57 = 21,261.12 : x
  2. Step 2: Convert to fraction form
    77,420.28/116,130.57 = 21,261.12/x
  3. Step 3: Cross multiply
    77,420.28x = 116,130.57 × 21,261.12
  4. Step 4: Simplify right side
    77,420.28x = 2,469,065,984.44
  5. Step 5: Solve for x
    x = 2,469,065,984.44/77,420.28
  6. Step 6: Final answer
    x = 31,891.72

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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.