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Finding the Fourth Proportional to 55,297.40, 82,946.10 and 30,327.80

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Solution

The fourth proportional to 55,297.40, 82,946.10 and 30,327.80 is: 45,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,297.40 : 82,946.10 = 30,327.80 : x
  2. Step 2: Convert to fraction form
    55,297.40/82,946.10 = 30,327.80/x
  3. Step 3: Cross multiply
    55,297.40x = 82,946.10 × 30,327.80
  4. Step 4: Simplify right side
    55,297.40x = 2,515,572,731.58
  5. Step 5: Solve for x
    x = 2,515,572,731.58/55,297.40
  6. Step 6: Final answer
    x = 45,491.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.