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Finding the Fourth Proportional to 55,649.21, 76,751.23 and 48,920.57

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Solution

The fourth proportional to 55,649.21, 76,751.23 and 48,920.57 is: 67,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,649.21 : 76,751.23 = 48,920.57 : x
  2. Step 2: Convert to fraction form
    55,649.21/76,751.23 = 48,920.57/x
  3. Step 3: Cross multiply
    55,649.21x = 76,751.23 × 48,920.57
  4. Step 4: Simplify right side
    55,649.21x = 3,754,713,919.80
  5. Step 5: Solve for x
    x = 3,754,713,919.80/55,649.21
  6. Step 6: Final answer
    x = 67,471.11

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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.