Home / 57,316.99-85,976.51-19,878.38

Finding the Fourth Proportional to 57,316.99, 85,976.51 and 19,878.38

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Solution

The fourth proportional to 57,316.99, 85,976.51 and 19,878.38 is: 29,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,316.99 : 85,976.51 = 19,878.38 : x
  2. Step 2: Convert to fraction form
    57,316.99/85,976.51 = 19,878.38/x
  3. Step 3: Cross multiply
    57,316.99x = 85,976.51 × 19,878.38
  4. Step 4: Simplify right side
    57,316.99x = 1,709,073,637.46
  5. Step 5: Solve for x
    x = 1,709,073,637.46/57,316.99
  6. Step 6: Final answer
    x = 29,817.93

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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.