Home / 72,720.44-109,068.51-20,135.24

Finding the Fourth Proportional to 72,720.44, 109,068.51 and 20,135.24

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Solution

The fourth proportional to 72,720.44, 109,068.51 and 20,135.24 is: 30,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,720.44 : 109,068.51 = 20,135.24 : x
  2. Step 2: Convert to fraction form
    72,720.44/109,068.51 = 20,135.24/x
  3. Step 3: Cross multiply
    72,720.44x = 109,068.51 × 20,135.24
  4. Step 4: Simplify right side
    72,720.44x = 2,196,120,625.29
  5. Step 5: Solve for x
    x = 2,196,120,625.29/72,720.44
  6. Step 6: Final answer
    x = 30,199.50

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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.