Home / 57,428.12-85,980.36-43,343.35

Finding the Fourth Proportional to 57,428.12, 85,980.36 and 43,343.35

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Solution

The fourth proportional to 57,428.12, 85,980.36 and 43,343.35 is: 64,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,428.12 : 85,980.36 = 43,343.35 : x
  2. Step 2: Convert to fraction form
    57,428.12/85,980.36 = 43,343.35/x
  3. Step 3: Cross multiply
    57,428.12x = 85,980.36 × 43,343.35
  4. Step 4: Simplify right side
    57,428.12x = 3,726,676,406.70
  5. Step 5: Solve for x
    x = 3,726,676,406.70/57,428.12
  6. Step 6: Final answer
    x = 64,892.89

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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.