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Finding the Fourth Proportional to 85,630.08, 128,278.92 and 63,099.88

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Solution

The fourth proportional to 85,630.08, 128,278.92 and 63,099.88 is: 94,527.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,630.08 : 128,278.92 = 63,099.88 : x
  2. Step 2: Convert to fraction form
    85,630.08/128,278.92 = 63,099.88/x
  3. Step 3: Cross multiply
    85,630.08x = 128,278.92 × 63,099.88
  4. Step 4: Simplify right side
    85,630.08x = 8,094,384,458.53
  5. Step 5: Solve for x
    x = 8,094,384,458.53/85,630.08
  6. Step 6: Final answer
    x = 94,527.35

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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.