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Finding the Fourth Proportional to 85,343.32, 117,788.16 and 49,563.28

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Solution

The fourth proportional to 85,343.32, 117,788.16 and 49,563.28 is: 68,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,343.32 : 117,788.16 = 49,563.28 : x
  2. Step 2: Convert to fraction form
    85,343.32/117,788.16 = 49,563.28/x
  3. Step 3: Cross multiply
    85,343.32x = 117,788.16 × 49,563.28
  4. Step 4: Simplify right side
    85,343.32x = 5,837,967,554.76
  5. Step 5: Solve for x
    x = 5,837,967,554.76/85,343.32
  6. Step 6: Final answer
    x = 68,405.68

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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.