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Finding the Fourth Proportional to 32,079.20, 48,118.80 and 9,890.60

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Solution

The fourth proportional to 32,079.20, 48,118.80 and 9,890.60 is: 14,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,079.20 : 48,118.80 = 9,890.60 : x
  2. Step 2: Convert to fraction form
    32,079.20/48,118.80 = 9,890.60/x
  3. Step 3: Cross multiply
    32,079.20x = 48,118.80 × 9,890.60
  4. Step 4: Simplify right side
    32,079.20x = 475,923,803.28
  5. Step 5: Solve for x
    x = 475,923,803.28/32,079.20
  6. Step 6: Final answer
    x = 14,835.90

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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.