Home / 57,211.07-78,923.21-49,646.78

Finding the Fourth Proportional to 57,211.07, 78,923.21 and 49,646.78

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Solution

The fourth proportional to 57,211.07, 78,923.21 and 49,646.78 is: 68,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.07 : 78,923.21 = 49,646.78 : x
  2. Step 2: Convert to fraction form
    57,211.07/78,923.21 = 49,646.78/x
  3. Step 3: Cross multiply
    57,211.07x = 78,923.21 × 49,646.78
  4. Step 4: Simplify right side
    57,211.07x = 3,918,282,973.26
  5. Step 5: Solve for x
    x = 3,918,282,973.26/57,211.07
  6. Step 6: Final answer
    x = 68,488.20

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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.