Home / 55,705.60-83,558.40-51,428.80

Finding the Fourth Proportional to 55,705.60, 83,558.40 and 51,428.80

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Solution

The fourth proportional to 55,705.60, 83,558.40 and 51,428.80 is: 77,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,705.60 : 83,558.40 = 51,428.80 : x
  2. Step 2: Convert to fraction form
    55,705.60/83,558.40 = 51,428.80/x
  3. Step 3: Cross multiply
    55,705.60x = 83,558.40 × 51,428.80
  4. Step 4: Simplify right side
    55,705.60x = 4,297,308,241.92
  5. Step 5: Solve for x
    x = 4,297,308,241.92/55,705.60
  6. Step 6: Final answer
    x = 77,143.20

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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.