Home / 55,435.72-83,143.53-19,417.48

Finding the Fourth Proportional to 55,435.72, 83,143.53 and 19,417.48

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Solution

The fourth proportional to 55,435.72, 83,143.53 and 19,417.48 is: 29,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,435.72 : 83,143.53 = 19,417.48 : x
  2. Step 2: Convert to fraction form
    55,435.72/83,143.53 = 19,417.48/x
  3. Step 3: Cross multiply
    55,435.72x = 83,143.53 × 19,417.48
  4. Step 4: Simplify right side
    55,435.72x = 1,614,437,830.90
  5. Step 5: Solve for x
    x = 1,614,437,830.90/55,435.72
  6. Step 6: Final answer
    x = 29,122.70

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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.