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Finding the Fourth Proportional to 98,401.32, 135,792.12 and 55,958.88

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Solution

The fourth proportional to 98,401.32, 135,792.12 and 55,958.88 is: 77,222.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,401.32 : 135,792.12 = 55,958.88 : x
  2. Step 2: Convert to fraction form
    98,401.32/135,792.12 = 55,958.88/x
  3. Step 3: Cross multiply
    98,401.32x = 135,792.12 × 55,958.88
  4. Step 4: Simplify right side
    98,401.32x = 7,598,774,948.03
  5. Step 5: Solve for x
    x = 7,598,774,948.03/98,401.32
  6. Step 6: Final answer
    x = 77,222.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.