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Finding the Fourth Proportional to 30,137.15, 45,201.87 and 7,952.20

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Solution

The fourth proportional to 30,137.15, 45,201.87 and 7,952.20 is: 11,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.15 : 45,201.87 = 7,952.20 : x
  2. Step 2: Convert to fraction form
    30,137.15/45,201.87 = 7,952.20/x
  3. Step 3: Cross multiply
    30,137.15x = 45,201.87 × 7,952.20
  4. Step 4: Simplify right side
    30,137.15x = 359,454,197.61
  5. Step 5: Solve for x
    x = 359,454,197.61/30,137.15
  6. Step 6: Final answer
    x = 11,927.28

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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.