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Finding the Fourth Proportional to 55,578.80, 76,649.06 and 40,506.59

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Solution

The fourth proportional to 55,578.80, 76,649.06 and 40,506.59 is: 55,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,578.80 : 76,649.06 = 40,506.59 : x
  2. Step 2: Convert to fraction form
    55,578.80/76,649.06 = 40,506.59/x
  3. Step 3: Cross multiply
    55,578.80x = 76,649.06 × 40,506.59
  4. Step 4: Simplify right side
    55,578.80x = 3,104,791,461.53
  5. Step 5: Solve for x
    x = 3,104,791,461.53/55,578.80
  6. Step 6: Final answer
    x = 55,862.88

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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.