Home / 45,675.12-68,511.36-20,697.12

Finding the Fourth Proportional to 45,675.12, 68,511.36 and 20,697.12

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Solution

The fourth proportional to 45,675.12, 68,511.36 and 20,697.12 is: 31,045.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,675.12 : 68,511.36 = 20,697.12 : x
  2. Step 2: Convert to fraction form
    45,675.12/68,511.36 = 20,697.12/x
  3. Step 3: Cross multiply
    45,675.12x = 68,511.36 × 20,697.12
  4. Step 4: Simplify right side
    45,675.12x = 1,417,987,839.28
  5. Step 5: Solve for x
    x = 1,417,987,839.28/45,675.12
  6. Step 6: Final answer
    x = 31,045.08

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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.