Home / 73,319.08-109,985.66-20,730.28

Finding the Fourth Proportional to 73,319.08, 109,985.66 and 20,730.28

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Solution

The fourth proportional to 73,319.08, 109,985.66 and 20,730.28 is: 31,097.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,319.08 : 109,985.66 = 20,730.28 : x
  2. Step 2: Convert to fraction form
    73,319.08/109,985.66 = 20,730.28/x
  3. Step 3: Cross multiply
    73,319.08x = 109,985.66 × 20,730.28
  4. Step 4: Simplify right side
    73,319.08x = 2,280,033,527.78
  5. Step 5: Solve for x
    x = 2,280,033,527.78/73,319.08
  6. Step 6: Final answer
    x = 31,097.41

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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.