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Finding the Fourth Proportional to 35,088.08, 48,398.92 and 20,930

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Solution

The fourth proportional to 35,088.08, 48,398.92 and 20,930 is: 28,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,088.08 : 48,398.92 = 20,930 : x
  2. Step 2: Convert to fraction form
    35,088.08/48,398.92 = 20,930/x
  3. Step 3: Cross multiply
    35,088.08x = 48,398.92 × 20,930
  4. Step 4: Simplify right side
    35,088.08x = 1,012,989,395.60
  5. Step 5: Solve for x
    x = 1,012,989,395.60/35,088.08
  6. Step 6: Final answer
    x = 28,869.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.