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Finding the Fourth Proportional to 85,995.15, 128,919.21 and 32,657.27

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Solution

The fourth proportional to 85,995.15, 128,919.21 and 32,657.27 is: 48,957.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,995.15 : 128,919.21 = 32,657.27 : x
  2. Step 2: Convert to fraction form
    85,995.15/128,919.21 = 32,657.27/x
  3. Step 3: Cross multiply
    85,995.15x = 128,919.21 × 32,657.27
  4. Step 4: Simplify right side
    85,995.15x = 4,210,148,804.56
  5. Step 5: Solve for x
    x = 4,210,148,804.56/85,995.15
  6. Step 6: Final answer
    x = 48,957.98

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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.