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Finding the Fourth Proportional to 61,712.80, 85,161.94 and 36,562.30

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Solution

The fourth proportional to 61,712.80, 85,161.94 and 36,562.30 is: 50,454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,712.80 : 85,161.94 = 36,562.30 : x
  2. Step 2: Convert to fraction form
    61,712.80/85,161.94 = 36,562.30/x
  3. Step 3: Cross multiply
    61,712.80x = 85,161.94 × 36,562.30
  4. Step 4: Simplify right side
    61,712.80x = 3,113,716,398.86
  5. Step 5: Solve for x
    x = 3,113,716,398.86/61,712.80
  6. Step 6: Final answer
    x = 50,454.95

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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.