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Finding the Fourth Proportional to 80,315.76, 110,835.64 and 48,484.72

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Solution

The fourth proportional to 80,315.76, 110,835.64 and 48,484.72 is: 66,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,315.76 : 110,835.64 = 48,484.72 : x
  2. Step 2: Convert to fraction form
    80,315.76/110,835.64 = 48,484.72/x
  3. Step 3: Cross multiply
    80,315.76x = 110,835.64 × 48,484.72
  4. Step 4: Simplify right side
    80,315.76x = 5,373,834,971.42
  5. Step 5: Solve for x
    x = 5,373,834,971.42/80,315.76
  6. Step 6: Final answer
    x = 66,908.85

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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.