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Finding the Fourth Proportional to 73,792.20, 110,688.30 and 18,388.20

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Solution

The fourth proportional to 73,792.20, 110,688.30 and 18,388.20 is: 27,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,792.20 : 110,688.30 = 18,388.20 : x
  2. Step 2: Convert to fraction form
    73,792.20/110,688.30 = 18,388.20/x
  3. Step 3: Cross multiply
    73,792.20x = 110,688.30 × 18,388.20
  4. Step 4: Simplify right side
    73,792.20x = 2,035,358,598.06
  5. Step 5: Solve for x
    x = 2,035,358,598.06/73,792.20
  6. Step 6: Final answer
    x = 27,582.30

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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.