Home / 63,121.90-87,117.66-40,486.42

Finding the Fourth Proportional to 63,121.90, 87,117.66 and 40,486.42

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Solution

The fourth proportional to 63,121.90, 87,117.66 and 40,486.42 is: 55,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121.90 : 87,117.66 = 40,486.42 : x
  2. Step 2: Convert to fraction form
    63,121.90/87,117.66 = 40,486.42/x
  3. Step 3: Cross multiply
    63,121.90x = 87,117.66 × 40,486.42
  4. Step 4: Simplify right side
    63,121.90x = 3,527,082,172.18
  5. Step 5: Solve for x
    x = 3,527,082,172.18/63,121.90
  6. Step 6: Final answer
    x = 55,877.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.