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Finding the Fourth Proportional to 55,136.80, 76,100.88 and 36,275.68

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Solution

The fourth proportional to 55,136.80, 76,100.88 and 36,275.68 is: 50,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.80 : 76,100.88 = 36,275.68 : x
  2. Step 2: Convert to fraction form
    55,136.80/76,100.88 = 36,275.68/x
  3. Step 3: Cross multiply
    55,136.80x = 76,100.88 × 36,275.68
  4. Step 4: Simplify right side
    55,136.80x = 2,760,611,170.60
  5. Step 5: Solve for x
    x = 2,760,611,170.60/55,136.80
  6. Step 6: Final answer
    x = 50,068.40

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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.