Home / 57,317.81-85,991.64-21,779.76

Finding the Fourth Proportional to 57,317.81, 85,991.64 and 21,779.76

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Solution

The fourth proportional to 57,317.81, 85,991.64 and 21,779.76 is: 32,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,317.81 : 85,991.64 = 21,779.76 : x
  2. Step 2: Convert to fraction form
    57,317.81/85,991.64 = 21,779.76/x
  3. Step 3: Cross multiply
    57,317.81x = 85,991.64 × 21,779.76
  4. Step 4: Simplify right side
    57,317.81x = 1,872,877,281.21
  5. Step 5: Solve for x
    x = 1,872,877,281.21/57,317.81
  6. Step 6: Final answer
    x = 32,675.31

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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.