Home / 61,272.20-91,908.30-45,720.20

Finding the Fourth Proportional to 61,272.20, 91,908.30 and 45,720.20

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Solution

The fourth proportional to 61,272.20, 91,908.30 and 45,720.20 is: 68,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,272.20 : 91,908.30 = 45,720.20 : x
  2. Step 2: Convert to fraction form
    61,272.20/91,908.30 = 45,720.20/x
  3. Step 3: Cross multiply
    61,272.20x = 91,908.30 × 45,720.20
  4. Step 4: Simplify right side
    61,272.20x = 4,202,065,857.66
  5. Step 5: Solve for x
    x = 4,202,065,857.66/61,272.20
  6. Step 6: Final answer
    x = 68,580.30

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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.