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Finding the Fourth Proportional to 55,651.68, 76,788 and 32,980.70

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Solution

The fourth proportional to 55,651.68, 76,788 and 32,980.70 is: 45,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,651.68 : 76,788 = 32,980.70 : x
  2. Step 2: Convert to fraction form
    55,651.68/76,788 = 32,980.70/x
  3. Step 3: Cross multiply
    55,651.68x = 76,788 × 32,980.70
  4. Step 4: Simplify right side
    55,651.68x = 2,532,521,607.66
  5. Step 5: Solve for x
    x = 2,532,521,607.66/55,651.68
  6. Step 6: Final answer
    x = 45,506.65

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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.