Home / 45,339.20-68,008.80-28,645.10

Finding the Fourth Proportional to 45,339.20, 68,008.80 and 28,645.10

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Solution

The fourth proportional to 45,339.20, 68,008.80 and 28,645.10 is: 42,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,339.20 : 68,008.80 = 28,645.10 : x
  2. Step 2: Convert to fraction form
    45,339.20/68,008.80 = 28,645.10/x
  3. Step 3: Cross multiply
    45,339.20x = 68,008.80 × 28,645.10
  4. Step 4: Simplify right side
    45,339.20x = 1,948,118,876.88
  5. Step 5: Solve for x
    x = 1,948,118,876.88/45,339.20
  6. Step 6: Final answer
    x = 42,967.65

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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.