Home / 55,421.81-83,165.83-20,365.01

Finding the Fourth Proportional to 55,421.81, 83,165.83 and 20,365.01

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Solution

The fourth proportional to 55,421.81, 83,165.83 and 20,365.01 is: 30,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,421.81 : 83,165.83 = 20,365.01 : x
  2. Step 2: Convert to fraction form
    55,421.81/83,165.83 = 20,365.01/x
  3. Step 3: Cross multiply
    55,421.81x = 83,165.83 × 20,365.01
  4. Step 4: Simplify right side
    55,421.81x = 1,693,672,492.87
  5. Step 5: Solve for x
    x = 1,693,672,492.87/55,421.81
  6. Step 6: Final answer
    x = 30,559.68

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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.