Home / 57,417.98-86,136.19-19,988.69

Finding the Fourth Proportional to 57,417.98, 86,136.19 and 19,988.69

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Solution

The fourth proportional to 57,417.98, 86,136.19 and 19,988.69 is: 29,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,417.98 : 86,136.19 = 19,988.69 : x
  2. Step 2: Convert to fraction form
    57,417.98/86,136.19 = 19,988.69/x
  3. Step 3: Cross multiply
    57,417.98x = 86,136.19 × 19,988.69
  4. Step 4: Simplify right side
    57,417.98x = 1,721,749,599.69
  5. Step 5: Solve for x
    x = 1,721,749,599.69/57,417.98
  6. Step 6: Final answer
    x = 29,986.24

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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.