Home / 57,861.40-86,921.70-55,499.80

Finding the Fourth Proportional to 57,861.40, 86,921.70 and 55,499.80

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Solution

The fourth proportional to 57,861.40, 86,921.70 and 55,499.80 is: 83,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,861.40 : 86,921.70 = 55,499.80 : x
  2. Step 2: Convert to fraction form
    57,861.40/86,921.70 = 55,499.80/x
  3. Step 3: Cross multiply
    57,861.40x = 86,921.70 × 55,499.80
  4. Step 4: Simplify right side
    57,861.40x = 4,824,136,965.66
  5. Step 5: Solve for x
    x = 4,824,136,965.66/57,861.40
  6. Step 6: Final answer
    x = 83,374.01

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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.