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Finding the Fourth Proportional to 37,990.59, 56,985.90 and 9,910.60

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Solution

The fourth proportional to 37,990.59, 56,985.90 and 9,910.60 is: 14,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,990.59 : 56,985.90 = 9,910.60 : x
  2. Step 2: Convert to fraction form
    37,990.59/56,985.90 = 9,910.60/x
  3. Step 3: Cross multiply
    37,990.59x = 56,985.90 × 9,910.60
  4. Step 4: Simplify right side
    37,990.59x = 564,764,601.46
  5. Step 5: Solve for x
    x = 564,764,601.46/37,990.59
  6. Step 6: Final answer
    x = 14,865.91

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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.