Home / 54,938.86-82,408.29-19,870.31

Finding the Fourth Proportional to 54,938.86, 82,408.29 and 19,870.31

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Solution

The fourth proportional to 54,938.86, 82,408.29 and 19,870.31 is: 29,805.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,938.86 : 82,408.29 = 19,870.31 : x
  2. Step 2: Convert to fraction form
    54,938.86/82,408.29 = 19,870.31/x
  3. Step 3: Cross multiply
    54,938.86x = 82,408.29 × 19,870.31
  4. Step 4: Simplify right side
    54,938.86x = 1,637,478,400.38
  5. Step 5: Solve for x
    x = 1,637,478,400.38/54,938.86
  6. Step 6: Final answer
    x = 29,805.47

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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.