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Finding the Fourth Proportional to 75,157.54, 103,481.35 and 63,803.50

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Solution

The fourth proportional to 75,157.54, 103,481.35 and 63,803.50 is: 87,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,157.54 : 103,481.35 = 63,803.50 : x
  2. Step 2: Convert to fraction form
    75,157.54/103,481.35 = 63,803.50/x
  3. Step 3: Cross multiply
    75,157.54x = 103,481.35 × 63,803.50
  4. Step 4: Simplify right side
    75,157.54x = 6,602,472,314.73
  5. Step 5: Solve for x
    x = 6,602,472,314.73/75,157.54
  6. Step 6: Final answer
    x = 87,848.44

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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.