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Finding the Fourth Proportional to 35,121, 52,617.70 and 20,298.61

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Solution

The fourth proportional to 35,121, 52,617.70 and 20,298.61 is: 30,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,121 : 52,617.70 = 20,298.61 : x
  2. Step 2: Convert to fraction form
    35,121/52,617.70 = 20,298.61/x
  3. Step 3: Cross multiply
    35,121x = 52,617.70 × 20,298.61
  4. Step 4: Simplify right side
    35,121x = 1,068,066,171.40
  5. Step 5: Solve for x
    x = 1,068,066,171.40/35,121
  6. Step 6: Final answer
    x = 30,411.04

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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.