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Finding the Fourth Proportional to 55,625.76, 76,760.76 and 32,990.40

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Solution

The fourth proportional to 55,625.76, 76,760.76 and 32,990.40 is: 45,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,625.76 : 76,760.76 = 32,990.40 : x
  2. Step 2: Convert to fraction form
    55,625.76/76,760.76 = 32,990.40/x
  3. Step 3: Cross multiply
    55,625.76x = 76,760.76 × 32,990.40
  4. Step 4: Simplify right side
    55,625.76x = 2,532,368,176.70
  5. Step 5: Solve for x
    x = 2,532,368,176.70/55,625.76
  6. Step 6: Final answer
    x = 45,525.10

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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.