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Finding the Fourth Proportional to 85,303.74, 117,742.59 and 49,505.28

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Solution

The fourth proportional to 85,303.74, 117,742.59 and 49,505.28 is: 68,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,303.74 : 117,742.59 = 49,505.28 : x
  2. Step 2: Convert to fraction form
    85,303.74/117,742.59 = 49,505.28/x
  3. Step 3: Cross multiply
    85,303.74x = 117,742.59 × 49,505.28
  4. Step 4: Simplify right side
    85,303.74x = 5,828,879,885.88
  5. Step 5: Solve for x
    x = 5,828,879,885.88/85,303.74
  6. Step 6: Final answer
    x = 68,330.88

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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.