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Finding the Fourth Proportional to 35,045.59, 48,355.69 and 20,138.71

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Solution

The fourth proportional to 35,045.59, 48,355.69 and 20,138.71 is: 27,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,045.59 : 48,355.69 = 20,138.71 : x
  2. Step 2: Convert to fraction form
    35,045.59/48,355.69 = 20,138.71/x
  3. Step 3: Cross multiply
    35,045.59x = 48,355.69 × 20,138.71
  4. Step 4: Simplify right side
    35,045.59x = 973,821,217.76
  5. Step 5: Solve for x
    x = 973,821,217.76/35,045.59
  6. Step 6: Final answer
    x = 27,787.27

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1.5x scale

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.