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Finding the Fourth Proportional to 56,620.80, 84,930.90 and 14,500.80

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Solution

The fourth proportional to 56,620.80, 84,930.90 and 14,500.80 is: 21,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,620.80 : 84,930.90 = 14,500.80 : x
  2. Step 2: Convert to fraction form
    56,620.80/84,930.90 = 14,500.80/x
  3. Step 3: Cross multiply
    56,620.80x = 84,930.90 × 14,500.80
  4. Step 4: Simplify right side
    56,620.80x = 1,231,565,994.72
  5. Step 5: Solve for x
    x = 1,231,565,994.72/56,620.80
  6. Step 6: Final answer
    x = 21,751.12

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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.