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Finding the Fourth Proportional to 37,990.29, 56,985.46 and 9,910.31

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Solution

The fourth proportional to 37,990.29, 56,985.46 and 9,910.31 is: 14,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,990.29 : 56,985.46 = 9,910.31 : x
  2. Step 2: Convert to fraction form
    37,990.29/56,985.46 = 9,910.31/x
  3. Step 3: Cross multiply
    37,990.29x = 56,985.46 × 9,910.31
  4. Step 4: Simplify right side
    37,990.29x = 564,743,640.68
  5. Step 5: Solve for x
    x = 564,743,640.68/37,990.29
  6. Step 6: Final answer
    x = 14,865.47

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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.